MBS Special

Publication

80-18

A111D3 Q^mTD

NATL INST OF STANDARDS & TECH R.I.C.

A1 11 03091 490

Collard, Jared J/Report on an Investlgat QC100 .U57 NO.480-, 18, 1977 C.I NBS-PUB

Report on an

Investigation of tlie

Higli Speed Hazards

of Steel Belted

Radial Tires on

Police Patrol Cars

U.S. DEPARTMENT OF

COMMERCE

National Bureau of

Standards

3-18

JUN 3 0 1977

/o-o

Report on an

Investigation of tlie

High Speed Hazards

of Steel Belted /^^7

Radial Tires on

Police Cars

by

Jared J. Collard

Law Enforcement Standards Laboratory

Center for Consumer Product Technology

National Bureau of Standards

Washington, D. C. 20234

prepared for National Institute of Law

Enforcement and Criminal Justice

Law Enforcement Assistance Administration

U.S. Department of Justice

Washington, D. C. 20531

U.S. DEPARTMENT OF COMMERCE, Juanita M. Kreps, Secretary

Dr. Sidney Harman, Under Secretary

Jordan J. Baruch, Assistant Secretary for Science and Technology

Cc^ NATIONAL BUREAU OF STANDARDS, Ernest Ambler, Acting Director
Library of Congress Cataloging in Publication Data

Collard, Jared J. Report on an investigation of the high speed hazards of steel belted

radial tires on police patrol cars. (Law enforcement equipment technology) (NBS special publication ; 480-18)

Supt. of Docs, no.: €13.10/480:18

1. Police vehicles—Tires. 2. Tires, Rubber—Standards. 1. National

Institute of Law Enforcement and Criminal Justice. IL Law Enforce- ment Standards Laboratory. IIL Title: Report on an investigation of

the high speed hazards of steel belted radial tires. . . IV. Series. V.

Series: United States. National Bureau of Standards. Special publication ; 480-18. QC100.U57 no. 480-18 [HV7936.V4] 353'.008'242 77-608082

National Bureau of Standards

Special Publication 480-18

Nat. Bur. Stand. (U.S.), Spec. Publ. 480-18 40 pages CODEN:XNBSAV

U.S. GOVERNMENT PRINTING OFFICE WASHINGTON:

For sale by the Superintendent of Documents,

U.S. Government Printing Office, Washington. D C. 20402

(Order by SD Catalog No. CI 3.1 0:480-1 8 ). stock No. 003-003-01786-8 Price $i.60 (Add 25 percent additional for other than U.S. mailing).

ACKNOWLEDGMENTS

This report was prepared by the Law Enforcement Standards Laboratory

of the National Bureau of Standards under the direction of Jacob J. Diamond, Chief of LESL. The cooperation of the following organizations is gratefully acknowledged: the Law Enforcement Group of the National Association of Fleet Administrators, Inc., the International Association of Chiefs of Police, the Safety Research Laboratory of the National Highway

Traffic Safety Administration, and the many cooperating police depart- ments.
CONTENTS

Page Preface iv

Foreword v

Abstract 1

1.0 Introduction 1

2.0 The Investigation 1

3.0 Findings 2

4.0 Conclusions 4

5.0 Recommendations 4

6.0 Postscript 4

Table 1: Tire Failures by Construction (Data Provided by U.S. Department of

Transportation) 6

Table 2: Summary of Survey by National Association of Fleet Administrators, Inc. . . 7

Table 3: Summary of Survey by International Association of Chiefs of PoHce 8

Table 4: Listing of Company-Certified High Speed Police Tires 9

Attachment A: State of Alabama Traffic Accident Report 10

Attachment B: State of Alabama Report of Taylor County, Florida Accident 16

Attachment C: Cahfomia Highway Patrol Test Reports 18

Attachment D: State of Florida Traffic Accident Report 23

Attachment E: Tires Company-Certified for High Speed Pohce Use 28

iii
Preface

The National Institute of Law Enforcement and Criminal Justice (NILECJ), in January 1975, requested the Law Enforcement Standards Laboratory (LESL) to investigate a report that a fatal accident by a trooper of the Alabama Highway Patrol was caused by a

failure of a steel belted radial ply tire at high speed. This report contains the findings of

the investigation, the conclusions reached, and LESL's recommendations. No actual tire testing was conducted by the National Bureau of Standards during this investigation. The

use of brand names in the report in no way implies endorsement or indictment of any

particular product by the National Bureau of Standards. This report was originally

published by the National Bureau of Standards in June 1975 as NBSIR 75-734. The

information contained herein was current as of that date.

iv
FOREWORD

The Law Enforcement Standards Laboratory (LESL) of the National Bureau of

Standards (NBS) furnishes technical support to the National Institute of Law Enforcement

and Criminal Justice (NILECJ) program to strengthen law enforcement and criminal

justice in the United States. LESL's function is to conduct research that will assist law

enforcement and criminal justice agencies in the selection and procurement of quality

equipment.

LESL is (1) subjecting existing equipment to laboratory testing and evaluation and (2) conducting research leading to the development of several series of documents, including

national voluntary equipment standards, user guidelines, state-of-the-art surveys and other

reports.

This document is a law enforcement equipment report developed by LESL under the

sponsorship of NILECJ. Additional reports as well as other documents are being issued

under the LESL program in the areas of protective equipment, communications

equipment, security systems, weapons, emergency equipment, investigative aids, vehicles

and clothing.

Technical comments and suggestions concerning the subject matter of this report are invited from all interested parties. Comments should be addressed to the Law

Enforcement Standards Laboratory, National Bureau of Standards, Washington, D.C.

20234.

Jacob J. Diamond

Chief, Law Enforcement

Standards Laboratory

V

REPORT ON AN INVESTIGATION OF THE HIGH SPEED HAZARDS

OF STEEL BELTED RADIAL TIRES ON POLICE PATROL CARS

ABSTRACT

At least two police fatalities and one permanent disability were caused by catastrophic failures of steel- belted, radial-ply tires during high speed police operations. More than 200 other failures were reported by one

State highway patrol department. The report concludes that general-use tires, whether steel-belted radial, fabric- belted radial, bias ply, or bias belted, are not suited to high speed use. It recommends that police departments

use for high speed patrol only those models that tire manufacturers have tested and certified for use at speeds of

at least 125 miles per hour. Tires of all four types are available for such use.

Key words: High speed tire hazard: police patrol car tires; radial tire failures.

1 .0. INTRODUCTION

In the fall of 1974, the Law Enforcement Standards Laboratory (LESL), of the

National Bureau of Standards (NBS), began to receive unconfirmed reports of a fatal police accident involving the alleged failure of a steel belted radial tire. In a letter dated

December 12, 1974, John M. Grow, Manager of Transportation Services for the California

Highway Patrol, expressed his concern in the following manner:

"The recent loss of life in a southern state [happened] because so many people were

so uninformed that a vendor sold and the state purchased steel belted radial tires for highway patrol use. Every steel belted radial tested by us has come unglued at about 105

mph to 115 mph. Why not describe what's a high speed tire? Why not test tires and

publish the results to law enforcement agencies? We would probably faint if we knew how

many policemen engaged in high speed pursuit or response ride on Mickey Mouse tires every hour of every day.

'

LESL received a request on January 2, 1975, from the National Institute of Law

Enforcement and Criminal Justice (NILECJ) to conduct a quick-response investigation of

the use of steel belted radial ply (SBR) tires by police. On January 24, 1975, a prehminary

memorandum report was submitted to NILECJ. This document constitutes the final report

of that investigation.

2.0 THE INVESTIGATION

1. Contact was made with the Department of Public Safety, State of Alabama. A copy of

the report of a fatal police accident was obtained and is provided as attachment A.

2. The State of Alabama provided LESL with a copy of a report it had prepared

concerning a second fatal police accident, which had occurred in Taylor County, Florida

(see attachment B). LESL made telephone contact with the Sheriff s Department of Taylor

County to verify the facts.

3. Contact was made with the Cahfornia Highway Patrol, which has tested several brands

of steel belted radial ply tires. Copies of their test results are provided as attachment C.

4. Contact was made with the Florida Highway Patrol concerning the permanent disability

of one trooper. A copy of that accident investigation report is provided as attachment D.

1
5. Contact was made with the Office of Defects Investigation, National Highway Traffic

Safety Administration (NHTSA), to discuss elements of the Alabama fatality. The NHTSA

Safety Research Laboratory was contacted and supplied information concerning the

performance of various tires at high speed (see tables la and lb).

6. A telephone survey of ten police agencies around the country was conducted to determine the extent to which SBRs have been or are being used or tested, and any

problems experienced. This telephone survey was augmented by two larger, more detailed

surveys (see 7 and 8, below).

7. The chairman of the Safety Committee of the National Association of Fleet

Administrators agreed to survey the law enforcement group for user data. The results of

that survey are summarized in table 2.

8. The Highway Safety Division of the International Association of Chiefs of Police was

queried for user information and undertook a survey of the fifty state pohce organizations.

A summary of the results obtained is provided in table 3.

9. The four major automobile manufacturers were contacted to ascertain company policy

concerning the provision of SBRs as original or optional equipment (see Finding 2, below).

10. Several of the larger U.S. tire companies and two foreign tire companies were

contacted concerning the certification and use of SBRs for law enforcement. Table 4 is a summary of attachment E, which consists of letters or announcements from several tire manufacturers listing the tires which the manufacturers have tested and certified for high

speed police use. The names of the U.S. companies which manufacture high speed police

tires were obtained from the Tire Industry Safety Council, This summary is provided as a convenience to the reader and does not imply endorsement or certification of the products

by the National Bureau of Standards.

3.0 FINDSNGS

1. The four U.S. tire industry representatives contacted by LESL stated that their companies do not recommend their standard grade SBRs for police pursuit vehicles, but

that these SBRs could be, and are being, used satisfactorily on police cars where high

speed is not a factor. The statement commonly heard was that U.S. steel belted radial

tires "are not certified over 105 mph" (170 km/h)'. One U.S. company reportedly is developing and testing an SBR for 125 mph (200 km/h) certification, however. Several

companies are beginning to produce and market Kevlar belted tires as an alternative to SBRs. The companies report that Kevlar tires have been tested and certified up to 125

mph (200 km/h). Several U.S. companies have textile belted radial tires, as well as bias ply and bias belted tires, which they will certify for high speed pursuit. At least two

foreign manufacturers have certified certain sizes of SBRs for speeds of 125 mph (200 km/

h), or more (see attachment E).

2. The four U.S. automobile manufacturers are not in agreement concerning the use of U.S. -made SBRs for police operations. One company will supply domestic SBRs as optional equipment, when so specified by the ordering police agency. Another company

will not supply SBRs unless the local dealer obtains a waiver of responsibility from the

' Standard International Metric units appear in parentheses, as a convenience to tiie reader. Kilometer per hour speeds are rounded to the nearest zero or 5.

2
ordering agency. The other two manufacturers will not put domestic SBRs on any patrol car purchased with a "pohce package." (The package consists of heavy duty suspension,

brakes, cooling systems, etc.). However, if a patrol car is ordered without the package,

SBRs may be provided, since there is no way to distinguish that car from any standard

vehicle during the production process.

3. In 1974, one state trooper was killed in Alabama and in Florida, one Deputy Sheriff was killed and two state troopers were injured, one of them permanently disabled, in accidents caused by sudden failures of steel belted radial tires at speeds estimated to be

between 100-110 mph (160-175 km/h). The Alabama Highway Patrol experienced

approximately 40 other SBR tire failures, which resulted in light-to-moderate damage to some of the vehicles (see attachment A). In all, the surveys reported that five patrol cars have been totally destroyed and 16 damaged, as a result of SBR failures (see tables 2 and

3).

4. High speed tire failures begin with small pieces of the tread being thrown off with

considerable force. This is known as "chunking," and is usually made known to the experienced driver by the noise of the chunks hitting the undercarriage or the fender walls. Unless speed is gently, but immediately, reduced, these chunks will become larger and

larger, and the entire tread and steel belts may peel off (see attachment C). In many

cases, enough integrity may be retained by the tire to permit the vehicle to be brought to a gradual halt. In other cases, however, the tire instantly loses air pressure. At high

speed, this blow-out may send the car out of control. All ot the police departments LESL

contacted by telephone were aware that standard grade SBRs will not perform well at high

speed, and are therefore not suitable lor most patrol situations. Nevertheless, some

departments are continuing to use SBRs and others are planning to switch to them

because of the tire's superior treadwear, puncture resistance, and handling characteristics.

5. As can be seen from table la, most of the standard grade SBR's tested on a high speed

wheel by the U.S. Department of Transportation (DOT) failed at 100 or 105 mph (160-165

km/h).. One SBR failure occurred at 80 mph (130 km/h): another did not fail until 110 mph

(175 km/h) had been reached. This variation cannot be explained without additional

testing. LESL has not discovered any Government research on the problem as it specifically relates to police tires.

Table la also reveals that, in the DOT laboratory tests, the SBRs, on the average,

fared no better and no worse than the bias ply, bias belted, and fabric radial tires. For each type of construction, the average speed at which failure occurred was approximately

100 mph (160 km/h). None of the tires tested by DOT were rated by the manufacturers as

police special or high speed tires. Table lb lists the brands and sizes of tires tested by

DOT.

6. Tire failure on the road is affected by several important variables, in addition to the

variability in tire construction illustrated by table la. These include road surface texture, ambient temperature, age and condition of the tire, inflation pressure, load on the tire, and length of running time at high speed. The fundamental cause of tire failure is heat

build-up within the tire, primarily due to the rapid flexing of the tire materials, such as

the belts and cords. Of all the above causes for heat build-up, improper tire inflation and

high speed are the most important.

3
4.0 CONCLUSIONS

1. Although some standard grade SBRs may be used safely and effectively by some

jurisdictions which do not patrol freeways, or certain densely populated urban areas where

extremely high speeds cannot be driven, most standard grade steel belted radial tires are

not suitable for county or state poHce operations, because of the high probability that speeds over 90 mph (145 km/h) may be achieved.

2. The improper use of SBRs is not widespread among the police. As stated above, all of

\ the departments contacted by LESL are aware of the high speed hmitations of standard

^ grade SBRs. Some of this knowledge has come from the tire and automobile companies;

in other cases, it has been gained by bitter experience. Nevertheless, a sufficient number

of police departments are using SBRs, or are planning to use them, to warrant Federal

action.

3. More authoritative tire information is needed by police agencies and purchasing

departments, free of the biases=^or advertising claims of tire manufacturers. This

information should be based upon actual testing of police tires, under a variety of

operating conditions, and serve as a guidehne for the proper selection of tires for pohce

use.

4. Table la reveals that the problem of high speed tire failures is not limited to radial

tires: bias and bias-belted tires will also fail at about the same speeds. The cause of the problem is the improper selection of tires for police operations. High speed driving

requires high speed tires, not the standard grade tires commonly ordered by most police

departments.

5.0 RECOMMENDATIONS

1. Joint LEAA/NHTSA notices should be issued to all law enforcement agencies, tire companies and dealers, and automobile manufacturers and dealers, informing all parties

of the government's concern that standard grade steel belted radial tires are being

ordered, sold, and used in situations which may be hazardous.

2. Police agencies should be advised to purchase and use only those tires which the manufacturer has certified to have been tested and approved for police use at speeds up

to at least 125 mph (200 km/h). This written certification should be provided to the

ordering agency upon delivery of either replacement tires or patrol cars with SBR's as

original equipment.

3. Tire companies and their dealers should be cautioned against selling to the police

(federal, state, county or local) any tire that has not passed the company's own high

speed certification tests. The test procedures, results, and certification should be made a standard part of a tire company's bid package.

4. All automobile manufacturers should be urged, or required, to adopt a uniform policy

concerning the provision of high speed tires on new pohce vehicles.

6.0 POSTSCRIPT

This report has dealt with the problems encountered by police using standard grade

steel behed radial tires at high speeds. This should not be construed as an indictment of

4
the use of SBR's by the general pubhc, as long as the posted speed limits are observed

and the tires receive reasonable care and maintenance. Any tire—bias, bias belted, or

radial—will fail when it is abused, which includes driving at speeds beyond the tire's design maximum. Undoubtedly, failures of non-radial tires have also occurred over the years and have caused police injuries and fatalities. While it is impossible to eliminate the occurrence of tire failures, it is possible to reduce them through the use of better

performance specifications for tire procurement, as well as improved tire safety and

maintenance programs.

5
Table la

Tire Failures by Construction^

Speed at Failure'' Average Total Did speed number mph 80 85 90 95 100 105 110 115 120 not at of tires Consiruciion krn/li 129 137 145 153 161 169 177 185 193 fail failure tested

1 4 14 5 2 101 mph 27

(162 km/Ill ted 2 4 6 2 4 1 3 2' 101 mph 24

(162 km/hi

Fabric Radial

Steel Radial

100 mph

(161 km/h)

101 mph

(162 km/h)

This analysis is based upon data provided by the Safety Research Laboratory, U.S. Department of Transportation. Tires were standard grade passenger tires selected from stocks on hand.

" DOT TEST PROCEDURE

Break-in at 50 mph (80.5 km/h) for four hours; cool tires to ambient temperature (100°K or 37.8°C): run tires for 30 minutes at 75 mph (120.8 km/h); increase speed in 5 mph

(8.1 km/h) increments and run tor 30 minutes at each new speed until failure occurs.

^ Two tires withstood 30 minutes at 120 mph (193 km/h) without failure; the tests were suspended at that point. For averaging purposes, these were assumed to have lailed

at 125 mph (201 km/h).

Table lb

Tire Brands Tested by the U.S. Department of Transportation

Bias Ply

Dunlop Gold Cup, G7&-14

Firestone 500, G75-15

Firestone Delux Champion, F78-14 Goodrich Custom, G78-14 Goodyear Power Cushion 78, G78-14

Kelly Springfield 78, G78-14

Bias Belted

Dunlop Qualifier, G/T, G70-14

Firestone 500 steel belted, F78-14

Firestone Sup-R-Belt, H78-15

General Jumbo 700, F70-14 Goodrich Silvertown, G70-14 Goodyear Custom Power Cushion, H78-14 Goodyear Custom W.T., G70-14

Kelly Springfield Super Charger, G70-14

Fabric Radial

Dunlop SP41, 205R14

General Jet RADAN, 205R14

Goodrich 990, FR70-14

Steel Radial

Firestone V-1, GR70-14

Gislavd Veloche 116, 175SR14

Goodrich Lifesaver, GR70-14

Goodyear Custom Steel Guard, GR78-15

MicheUn, 205-14

Pirelli Cinturato CN75, 205-14

Sears, 20S-14

6
TABLE 2 SUMMARY OF NATIONAL ASSOCIATION OF FLEET ADMINISTRATORS SURVEY OF STEEL BELTED RADIAL TIRE USE BY POLICE

TESTED OR HOW

USED MANY

SBR's CARS

HOW

LONG IN USE?

ORIGINAL

EQUIP. OR

INSTANCES EST. MPH AND TYPE SPEED AT EST. OF TIRE TIME OF TIRE REPLACEMENT FAILUREEST. NO. OF

MILES MAKE & SIZE FAILURE PRESSURE ON TIRE OF TIRE USED

ANY

INJURIES DAMAGE TO OR USER'S VEHICLE FATALITIES COMMENTS

Arizong Dept. of Yes 26- 1 1/2 v'S. Public Safety 60

Baltimore County Yes 12 No

Police Dept. answer

Calif. Highway Yes 10 Test only

Patrol

Georgia Dept. Yes 2 Test only

of Public Safety

Illinois State Yes 10 16-20.000

Police miles

Illinois State Yes 6 40.000

Toll Highway

Authority

Indianapolis, Ind. Yes 10 No

Police Dept. answer

Yes

Kansas City, Mo. Yes 20

Police Dept.

2 10/1/74

190 2 years

Original &

replacement

3 months Original

Yes: belt separations & sidewalls

Replacement Yes; belt High

separations

placement No

32 psi

30 psi

Replacement Yes, belt 105 up 32 psi separations and chunking Replacement No N/A N/A

Original No N/A N/A

Replacement No N/A N/A

Yes, partial 120 30 psi

belt separation

6 months Replacement Yes; sidewalls Unknown 32 psi

Replacement No N/A

Original and No N/A

replacement

Various Goodrich Goodyear &

Uniroyal (sizes

not provided)

Sears; Michelin

205-16; Dunlop

H78-15: BFG

HR7a-15

40 - 50 HR7B-16

Under

10,000

N/A

N/A

N/A

N/A GR78-15

8.000 Goodyear HR78-1

5

Average Gillette GR78-16

13.000 Goodyear GR78-1

5

Goodrich GR70-16

Michelin XIAIW205-15 Firestone V-1 N/A

No

N/A

N/A

N/A

N/A

N/A

N/A

No

N/A

N/A

N/A

N/A

N/A

N/A

Mostly separations at high speed; have switched to

fabric belted radials

Important to maintain

air pressure at 30 psi

All steel belted radials inadequate for pursuit

Not perfected enough to include in bidding

Sidewalls have cracked

or split

Sidewall damage bad;

tread held up well

2 tires failed in high speed chase

Total of 10 failures

Testing Pirellis

Maine State

Police Miami, Florida

Police Dept.

Nebraska State

Patrol

New Jersey

State Police

New Mexico

State Police

New York City

Police Dept.

Oakland County,

Mich. Sheriffs Dept.

Ontario, Canada

Provincial Police

Penn. State

Police

South Carolina

(I Highway Dept. Texas Dept. of Public Safety

Utah Highway

Patrol

Yes,

tested

Yes,

Winter

6 months

2 months

40,000

miles

Life of

tire

14,000

miles

1 year

1 season

30,000

miles

Replacement No N/A N/A

1 original; 4 Yes; wire Unknown 30-32 replacement came through sidewalls Replacement No N/A N/A

Replacement Yes;

s idewa 1

1

cracking Replacement Yes; 21 cut sidewalls:

3 blowouts

Original &

replacement

Original

Replacement

Replacement

Yes: belt separatior

Yes; belt separations Replacement Yes: bell coming off &

9 months Replacement

sidewal I bubbles

Yes, one

belt separation

Yes: sidewall

Unknown 26 psi

Norma I cruising

115

55

N/A

80-1-

28 psi

28-32

psi

26 psi

30 psi

N/A

33 psi

32 psi

N/A N/A

16.000 Goodyear GR70-1

5

N/A N/A

18,000 LR78-15

Under

7,000

Firestone GR70-15

Goodrich GR70-16

Michelin GR78-16 Goodyear GR7B-16

Firestone HR78-15

Goodyear FR78-1 4 No

30.000 HR70-15 No

N/A (no answer) N/A

12,000 HR78-15 No

2500 Goodyear HR78-15 No

N/A

No

N/A

All 20 tires removed

approx. 15,000 miles

Tests conducted with

Michelins; just installed Michelin XVS on 4 units; no results yet 20% failure with fabric

radials; eliminating all radials from use

29 patrolcars, 5 supervisor cars; no problems

with supervisor's tires

Now procure only fabric radials

Used only on admin,

cars

All vehicles in test were pursuit vehicles

Tire adjusted by dealer

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ATTACHMENT A State of Auabama

DEPARTMENT OF PUBLIC SAFETY

MONTGOMERY, AUABAMA 36102

December 26, 1974

COLONEL ELDRED C. DOTHARO LT. COLONEL C. RUSSEL

DIRECTOR OF SAFETY

DIRECTOR

Mr. Jared Collard

Law En f or cement Standards Laboratory

Bureau of Standards

Washington , D. C. 20234 Dear Mr. Collard:

In response to your telephone request today, I am enclosing

the items of information you requested concerning our experience

with Firestone Steel Radial 500 V-1 tires.

Sergeant Julian D. Stuckey of this Department ' s Highway Patrol Division was killed June 27, 1974, near Evergreen on 1-65,

after the right rear tire blew out on his patrol car at an estimated speed of 100-110 MPH. A copy of the accident report is

attached together with photos of the defective tire.

After the accident , all Firestone tires were removed from

the department's pursuit cars. Since the department had no test facility for the tires, Mr. Andrew Detrick of the Department of

Transportation's Office of Defects Investigation was contacted

and asked to test a representative sample of Firestone tires in our stock. Further instructions as to shipping procedures were

given by Mr. Bob McKsnzie (202/426-2102) and Mr. C^rd&s Ga^za

(,262/426- 28 3 4) of the Office of Defects Investigation.

On August 8, 1974, fourteen tires were shipped to each testing

laboratory designated by Mr. Garza: CoapJiance Testing, Incorporated > Junction State Roads 14 s 88, Ravenna , Ohio and Batf ton T, Brown,

555 Church Street, Bohemia , Long Island, New York 11716. Since

three tire sizes, JR7 0x15 , HR70xl5 and HR7 8x15 , were shipped to each of the laboratories , another request was received for additional tires to provide a representative sample of fourteen tires

of each size to the laboratories. Subsequently , on August 29,

1974, an additional twenty-eight tires were shipped to each laboratory. No report has been received on the results of these tests.

If I can provide you with additional information on this

subject , please let me know.

Sincerely yours.

Planning & Research Unit

DRIVE CAREFULLY - SAVE A LIFE

10
State or Alabama

DEPARTMENT OF PUBLIC SAFETY

MONTGOMCRY. ALABAMA 3ei02

Auguae 8, 1974

Mr. Carlos Carza

Office of Standards Enforcersant National Ulghvay Traffic Administration

Department of Transportation

^2100 Second Street, S. W. Washington. X). C. #20590

Dear Mr. Garza:

The Alabama Department of Public Safety has run a survey of the Firestone tires which the troopers have been using for the past seve^^t^ months and the following facts are noted. There was a total of l^>Plrestone tires HR 70 x 15 Issued throughout the state with a total of 20 failures. The serial number of these failures was VCU 7 VHU303 with a total of 14 failures. One of these Involved an accldeoX in which one of our troopers was killed. The other QR 70s that fM^d were two (2) with a serial number VCU 7 VHU 293. The other tire that we've had a good many failures with was the Firestone HR 78. The serial number VDVTT FNJ 443 series had nine (9) fJH^res, the VDVY FMJ 373 had five (5) failures, the VDVY FNJ 313 hfl^lve (5) failures, VDUY FNR 353 (2) failures, VDVY FNR 333, two

(2) failures and several other serial numbers with one failure. ¥What we consider failures are blowouts, bubbles in tires, bllaand separations.

We are sending the two testing laboratories tires with VCU 7BU

303, HR 70, VDVY FNJ 373, HR 78, VDVY FNJ 443, HR 78, VDVY FNG 313, HR

78 and VBU 9 XMV 053, JR 70 numbers. These tires should be shipped to the testing laboratories the latter part of this week. We hope to have some results from the testing laboratories in the next few weeks.

c

I trust this is the information you needed. If I can be of further

assistance, please give us a call. Sincerely yours.

W. J. Smith, Lieutenant

Planning and Research Unit WJS/kh

11
MS74

Departnent Vehicle / /-/i-iA I] -f-Vi>'^ ALABAMA UNIFORM TRAFFIC ACC![5enV REPORT'

CGD Of Ti pqocessiMG only 06

COUNTY COO^ NU.V13ER 180 "Uo

aCOlDENT 1 'CrclpOne

SINGLE MOTOR VEHICLE tlVEHTURNED IN ROAD

RAN OFF ROAD

I - PEDESTRIAN

i - PEOALCVCLc

; - ^*OTO.^CYt'_ =

7^ Two OR MCSE MOTOR \- EHlCLcS RAM OFF ROAO 3i OVERTURNED

9 - OTHER

. FixED Oaj£CT Q IN ROAO.VAY. OR _

EDGE OF ROADWAY

Q1\ STREET. ROAO OR HIGHWAY I- 65

• BETWEEN Conec'jh Co. if 22

AND Evergreen City Limit

MILE POST NUMrtcR j_9 , 9 . ? . 0

I 0

STREET OR ROAO •— C006 0 0

MAIN ROAO

2 - FRONTAGE RO

- MAIN ROAD AT INTERCHANGE

jRi -/Ei^ S FUi-L NAME STREET OR R F 0 CITY 6 STATE Julian D. Stuckey P. Q". Box 190$ Bothan, Al. 363OI

GATE OF 6IR7H g 99 58

SEX MHACS W

'mm' ST4TE Al.

og.i,.upa;ion „ V * >^ORivEfl STetEPMO^ S-oate Troopeg;^^^! 792-217U

TYPE - MOTORCYCLE

- OTHER TRUCK

- L£ARN£R

- NONE

LICENSE REiTRICTIONlSl None

DRIVER CONDITION apparent defects 3 - fatigued s - unknov^n

(Ciixie On?) 2 - APPARENTLY ASLEEP 4 - ILL 6 - PHYSICAL DEFECTS a

DRIVER

SOBRIETY;

ori.\^:ng. DRUGS UNKNOWN UNKNOWN

T-. PE TEST C None

refused test YES ' :0NTRI3UTING CIRCUMSTaNCE(S) 22, 23,37

YEAR MA^E , eOOV _, Ih Ford U D FUU53Glla999 f INSPECTION

CERTIFICATE;

JRREMT NONE LICcNSHJ^^UWSER

EXPIRED 4 - UNKNOWN

SlATt Al.

State of Alao Deptc Fublic Safety p^C> Box Montgomery, Al> 36102

•PrEO L;v.i r I ^^T,M!iTEO 55 ^1PH b-oo-iio

?E^0MPH

DAM«0E T'J PROPER T r OTnER THA»4 (j EHICLI I Name, Object. Show Ownenh.p 4 Damage' V '/ '' I"on3 1 1

Appro* (Jji' 10 Repair s

WITNESS FUi-i. NAME AOOREiS A. Fo Lee 3266 VJinlwrDod Dr. Montgonery, Al«

PHONE NO- 281-7662 m

Six M

WITNESS FULL NAMS --OCPESG Jack ^idward Gantt Rt. C Evergreen 578-l!r§7° m

sex M

Aj7N0.2; F-EVtSeO 1 JAN 71

12
SEATING

2 36 a 9

M - Mctorevcta B - PedftkyclM O - Ottw

U - Unknown

P - Pedesman

SEAT BELTS

LAP B£LT ONLY

N - NonelnstilM

U - Untastenwi D - Not Rtponad

LAP & SHOULDER BfiLT

E - Not U»d

G - Lap Seft Only Uwd M ~ BoThB«ta UsKi

L - Not Rvportad

EJECTED

P - Partially N - No U - UnknovKn

- INJURY KA'.BO Viiiblesignt ot "ijurv, u blaading wou/mI or

diiiortsd mtfnbvf. Of had to b« cwri*d from

- Othdr wuible injury, a> bruiMs, obfuioni,

iwelling. Iimptng, etc.

- No viiibia injury but compJunt o( pjin ot momtmtary

FIRST AID BY

A - Amb. Attw*d D - Dociof

- Oih«

- UnkfKM

- Non*

:,ftC

I InI Firrt

, Julian D. Stuckey P. 0. Box 1905 Dothan. Al. 36301

1 mtuta TAUgMs*/ Conec'oh Co. Hospital Evergreen AF.bulance Co.

DIRECTION OF TRAVEL - VEHICLE 1-N vEHicLE^-N E,s w""""^^ »3U mileTTT^ w . TO jiiveTgreen

See Diagram on Page fr 2

DESCRIBE WHAT HAPPENED [REFER TO vEHiCLEsav NUMBER) Vehicle r7 1 was travelirg South on I- 6$ at a high rate

of speed. ( Approxiir:ately 100 to 110 .S-les Per Hour ) The right rear tire on vehicle ../I blew out. Vehicle ^ 1 traveled oOO feet on the pavement after the tire blew out leaving

rubber on the pavenent from the rupt^ored tire. At this point the driver lost control and

skidded into the grass r.edian. Vehicle =f 1 cane to rest up side down,after skidding and

overturning for 300 feet. The vebJ-cle overt-omed two and one half tines.

LIGHT

DAYLIGHT

2 - DAWN

3 - DUSX

4 - DARKNESS

5 - DAflKM^SS, RO. LIGHTED

WEATHER

iC.r:i»C~il CLEAR

2 - CLOUDY

3 - RAINING

4 - FOG

5 - SNOWING

SLEETING

6 - HAILING CHARACTER

2 - Ct.-aignt — Down Grac*

3 StTD-^t - Up Grad«

4 - Str?i»}nt — HillCTCSt 5 - Cur^e- ',3v-I 6 — CijrvB - Down Gt^ade

7 _ r.urv-* - Up Grw*

LOCALE

oOPEN COUNTRY

ReSlDENTlAL

3 - SHCP'G Oft BUSINESS

4 - MFG. or ;,\DUSTR(4L

5 - SCHOOL orPLAY'D

6 - OTHER

TRAFFIC CONTROL

i I - STCPSIGN

! 2 - STOP & GO SIGNAL

! 3 - YIELOSIGN

) 4 - OFFICER OR FLAGMAN

> 5 - RR CROSSING GATES

HR FLASHING LIGHTS

- NONE

HER

DEFECTS

; C .-rl^ On- or '.t^,

I - SHOULDERS LCiV

> - SHOULDERS HIGH

1 - HOLES. SUMPS ETC.

I - LOOSE MATERIAL ON

SURFACES - ROAD UNDER CONST.

> - TONE

' - OTHER

CONSTRUCTION

(Circle Ciw Fot Each V^hiclsl

1 - ASPHALT

2 - CONCRETE

3 - BRICK

4 - DIRT

5 - OTHER ROADWAY LANES

96

7

ONE LA:Se TrtO LAN £5 THREE LANES FOUR LANES

FIVE LANES

SIX LANES OR MORE

UNPAVEO' Any Width)

CONDlTiON

:i.cUrO.-.« For Ven

1 2 p 1 - DRV

2 2 - WET

3 3 - SNOWY, ICY 4 4 - MUDDY

5 5 - HAZARDOUS

MATERIAL

VISION OBSCURED

;C:rcle Cri* For E*Ji V^.l

<9

ROADWAY DIVIDED BY:

, T

(Cirri. O-t For Ejch Vahlci.)

' - MiDlA.'l CONiT.IUCTION

1 1 - CONCRETE

2 2 - ROUGH SURFACE O 3 - EARTH

4 - PAINTED MEDIAN BARRIER

5 - CONCRETE

6 - METAL G'JARORAIL

7 - FENCE

01 - NOT OBSCURED

02 - RAIN, SNOW, ICE. ETC. ON WINDSHIELD

03 - TREES, CROPS. BUSHES.

- BUILDINGISI

- EM^A^KMENT

- SIGNBOARD

- HILLCREST

- PARKED VEHICLElSI

- MOVING VEHICLEtSI

- BLINDED BY HEADLIGHTS

- BLINDEO 3Y SUNLIGHT

- 7rH = R

SUMMONS -'-iUMBSfl None

OF PERSON CHARGED CONTRIBUTING CIRCUMSTANCEISI

POLICE AGENCY NOTIFIED 1 : U5 ^

POLiCE ARHlVtO 1 :5i ^A.vaULANCE ARRIVED 1 o5e^

T^iArFlC FLOiV -^ESTOREDl NAME OF PHOTOGRA^-H 3 25 (FTSButch Adams

£R

NA.ME Of IWVE.SIIGaTRu J. Tc SiP.ellejFFICER y

BADGE NUMBER 90U

yClICk AGENCY

i'4AME OF CFHSn OFFlC£i^!SI AT SCENE BADGE NUMBERlSi POLICE AST

AGENCY •*m

}.J.V.'a3rd, Jo C.Fowler, W.F.Kirkland 337,125,2U3 AST THE DAVA ON THIS REPORT REFLECTS MY BEST KNOWLEOGI

IS MADE AS TO THE FACTUAL ACCURACY THEREOF

INVESTIGATING OFFICER

iMT. BUT NO WARRANT

DATE: 06 I 29 t7U

CONTRIBUTING CIRCUiVlSTANC£(S)

10 — No Impfoper Ont\ng 26 - Wrong Side of Road

It - Violattons Unknown 27 - PaiaineCn H:ll 12 — Imp Backing 28 — Paning on Curve

13 - Changing Lanes Imp. 29 — Otifff Improper PatJing 14 — Parking Impnspartv 30 — Turning Unlj^irfuKy 15 — Failure to Dim Lights 31 - Drrving in S-ffBty Zon«

16 — Light! Improper 32 — Pas Stpd. School Bia

17 - Veh. Uroaf* Cond. S3 - Inattentjon 18 — Driving in Wrong Lane 34 - Other Moving Viol. 19 - No Sig- Imp. Sig. 35 - Ekc. Wi. Ht, LLWb.

20 - Following Too Closaly 36 — P5d««Ti*n Drunk

21 - Delectiwe Btakei 37 — Fjulry Equipmam

22 — Exceedir^g Speed Limit 38 - Walkmg Viol^ion

23 - Excmding Safa Speed 39 -M.n.Spnd twm

24 - O'ireqarrl Sign Sig. 40 - R3cir>g On Hwy.

25 - No Right o( Way 41 - Oriv. under mf.

13
2.30 miles South to Evergreen

Sg»>^ North

I- 6$

Paved Shoulder

Right rear tire blew out here

Paved Shoulder

Paved Shoulder

Location Interstate # 65

2 o30 miles South to Evergreen in

Conecuh County

^'^e A.M. 1 ko ®

Signatur^f Reportipg Officer,(s.) Sgt.^-^r. SinelSy^'^*^^^^?^

Badge No.

90U

Reporting Police Agency

Alabama State Troopers

Month 06

Day 27

Year Ik

14
15
ATTACHMENT B

;-I E M O R A N D U M

To: Staff

From: Lieutenant Harold Hammond

Sub: Tire Failure-Perry County, Florida Sheriff's Office

As a result of a news article found in the August 8, 1974 issue

of the Perry News-Herald reporting the death of Taylor County

Deputy Sheriff Victor J. MacDonald on Sunday August 4, 197 4,

Sii a r 1 f iffAilJ if IT rt fi f n f n n was contacted for further details (Anea

According to reports. Deputy MacDonald was out of his patrol ve- hicle at a service station when a speeding car went by on US-19

.

The deputy ran to his patrol car and pursued the car at speeds

in excess of 100 HPH. The road was wet during the pursuit but

no rain was falling at the time. Sheriff Linton reported that

the tread on the right rear tire separated from the body of the

tire and "rolled into a ball". The tire was a ^S^*>dyeai«

^«a(T*^J*<Bff2 *I and had been mounted on the patrol car on July 26,

1974. The sheriff estimated that the tire had ^'cs^-'than -S^yOOO

miles on it at the time of the failure. The sheriff said a com- bination rollbar and shield kept the car's top up even though the car overturned several times. He was of the opinion that the

deputy would have lived if he had fastened his seatbelt and re- mained in the car. He stated the ' departme nt planned no action

against Goodyear Tire and Rubber Company but he believed the

deputy's family planned legal proceedings

.

An insurance adjuster had attempted to secure the tire which failed

for the purpose of returning it to Goodyear for tests. Instead the

sheriff has released the tire to the isi-OF-ide Highwrntf fSTral with the

understanding that they permit an independent laboratory to inspect it

and issue a report.

The sheriff v/as unable to advise how many Goodyear tires were in ser- vice on the wrecked vehicle and also he stated his Ae.f>aj: tmeofc- ii<ad . jjo ^•*?rirTTSH'§^"';re^5^ra't'f OW"''^ toir^- air pressure . The amount of

air pressure required is determined by the driver of the vehicle

.

HJH/ggb

16
AHACHMENT B-1

'Skip' MacDonald Dies

In Crash Sunday Night

Taylor County Deputy Sheriff Victor J. "Skip" MacDonald died instantly of head in- juries received Sunday evening when his patrol car overturned after blowing a tire as the

deputy pursued a speeding motorist at more

than 100 miles per hour on US 19 south of Salem.

Witnesses said MacDonald was at a service station in the area when the speeding vehicle went by and that he hurried to his parked cruiser to give chase.

The blowout was caused, it was reported,

by separation of the tread of a rear tire. Sheriff Maurice Lanton said Monday that the tire in question had been put on the car only about two weeks before the accident

and that he was unable to understand its failure.

MacDonald's car turned over several

times it was reported. The officer died

instantly of "massive head injuries'" it was

reported.

1

I

17
ATTACHMENT C-1

MICHELIN ROADABILITY TEST

On April 3, 1968, handling tests were conducted with two 1966

Dodge Class A vehicles equipped with the Michelin Radial Tires.

One vehicle had zero camber; the other negative. The testing

location consisted of turns of varying radii and corresponding

speeds

.

Testing began with air pressures of 36 p.s.i. At approximately

20 miles of testing, tread chunking at the outer edges of the

front tires appeared. With both camber settings, there was an extreme understeer characteristic until cornering forces became

such to cause the tire to roll upon the sidewall. At this point,

extreme overs teer took place.

Air pressures were reduced to manufacturers recommendation of 27 p.s.i. and testing duplicated. Handling was the same as with the

higher pressures except that the lag between understeer and over- steer was shorter.

With both air pressures at speeds of 90 to 100 m.p.h., the tires

caused a lateral oscillating effect.

Tire spin on acceleration in tight turns was minimal indicating

good rectilinear cohesion.

At the conclusion of testing, an inspection of the tires indicated

excessive tire tread "chunking" and sidewall wear.

AUTHOR'S NOTE;

The model of tire used in these 1968 tests are no longer in

production, according to the Michelin Corp. Current model

Michelin standard grade, steel belted radial tires were

included in the DOT tests summarized in Table la.

18
ATTACHMENT C-2

Training Division October 9, 1973

31.2678.A1418

FIRESTONE RADIAL

TIRES

Academy

As instructed, the Academy has completed testing of Firestone

steel radial tires.

The tires, two sets of HR 78-15 Steel Belt Radial 500 's and one set of HR 70-15 Steel Belt Radial VI ' s , have been returned

to Motor Transport Section.

All testing was conducted on the Academy high speed course in

the presence of Mr. F. W. Weller, Firestone Tire and Rubber

Company. Prior to testing, each set of tires was driven a minimum of 50 break in miles at normal highway speeds.

The results of our tests are as follows:

Firestone Steel Radial 500-HR 78-15

Testing was conducted on September 26, 1973. The tire is 4 ply (2 polyester - 2 steel) with 2 ply polyester side walls.

Tire pressures were at factory specification - 32 p.s.i.

The handling characteristics of the tires were erratic with

predominant understeer. This is typical with radial tires

during hard cornering. Chunking occured at the outer

shoulder of the right front tire after 14 miles of testing.

Firestone Steel Radial V-l-HR .70-15

Testing was conducted on October 1, 1973. The tire is 7 ply

(6 rayon - 1 steel) with 2 ply rayon side walls. Tire pressures

were at factory specification - 32 p.s.i.

The handling characteristics were typically erratic with radial

tires although improving with wear. The tires were testrd for

40 miles without the presence of abnormal wear or failure.

Testing was terminated with the appearance of a chunking about

the size of a quarter on the right front tire. This was probably caused by a stone cut, but could be a separation at

the tire splice point. The tire is far superior to other

radial tires tested by our staff to date.

19
Training Division

Page 2 October 9, 1973

Firestone Steel Radial 500-HR 78-15

Testing was conducted on October 4, 1973. The tire is

identical to the steel radial 500 tested on September 25, 1973.

Tire pressure was increased to 36 p.s.i. for this test.

Handling characteristics were the same as previous tests.

Chunking appeared after 10 miles.

Attached are photographs taken of the tires after testing.

H. D. FARGO, Captain

Commander

End osure

20
ATTACHMENT C-3

Academy July 24, 1973

31.6176.A2820

PIRELLI CINTURATO CN 75

RADIAL TIRE TEST

Skill Development Unit

On July 17 and 19, 1973, the E.V.O.C. staff conducted a series

of tests designed to evaluate the handling characteristics and

durability of the Pirelli Cinturato CN 75 radial "tire. The

tire is a 4 ply tread, 2 rayon, 2 steel, with 2 ply, rayon

sidewall

.

The tires used in the evaluation were mounted on a 1972

Dodge Polara, (B8655) assigned to the Academy E.V.O.C. unit

as a high speed training vehicle. The tires were mounted by

Jack's Shell and the front end aligned by Swift Dodge to

specifications requested by the Bruces Tire Company.

After 60 miles of street driving the tires were subjected to

high speed testing on the E.V.O.C. course. Twelve laps were completed counterclockwise. The first 5 laps were at moderate

speeds with the last 7 laps at high speeds. At the completion

of the 12th lap (18 miles) the right front tire was warped to

the point of being unusable. The right front tire was replaced

and testing continued. At the end of 13-1/2 laps clockwise

the entire tread peeled off the casing of the left front tire.

This occurred as the vehicle entered a constant radius turn to

the right at a speed of 100 mph. The tire failure caused the

vehicle to leave the roadway at this point. Total mileage

on the 5 tires was 120 miles.

The tires were inflated to 36 p.s.i. as specified by Bruces

Tire Company. The handling characteristics were completely

unsuitable for enforcement driving purposes. If moderate

to hard acceleration was attempted while hard cornering,

excessive understeer occurred. If no acceleration was attempted an exaggerated oversteer was present.

Although one tire warped and another separated, it was noted

that no chunking of the outer tread was present, as has been

the case with some previous radial tires tested.

21
Academy

Page 2 July 24, 1973

The consensus of the two test drivers is that the Pirelli

Cinturato CN 75 radial tire is unpredictable performancewise

and lacks the durability to be effective on enforcement

vehicles.

J. R. McDANIEL, I.D. #6176

State Traffic Officer

22
ATTACHMENT D-1

RALPH DAVIS

Department Of

State of Jiorida

HIGHWAY- SAFETY AND MOTOR VEHICLES

TALLAHASSEE 32304 FLORIDA HIGHWAY PATROL

P. 0. Box 332

Lake City, Florida

28 September 1973

COL. REID CLIFTON , director

DIVISION OF FLORIDA HIGHWAY PAi NEIL KIRKM>\N BLDC. JOHN D CALVtN. director

DIVISION OF MOTOR VEHICLES COLLINS BLDG. „. 107 W. GAINES ST. CLAY W. KEITH, DIRECTOR

DIVISION OF DRIVER LICENSES

NEIL KIRKMAN BLDC AUDKY CARTER, JR., DIRECTOR

DIVISION OF ADMINISTRATIVE SERVICES

NEIL KIRKMAN BLDG.

SUBJECT: Accident Involving Trooper T. L. Sullivan - PHP-1047 - 9/24/73

TO: Colonel J. E, Beach, Director

ATTENTION: Major W. R. Kaufman

Please find attached complete investigation

by Sergeant T. A. Pace on an accident involving Trooper

T. L. Sullivan while operating FHP-1047.

Trooper Sullivan was responding to a call to

assist Trooper R. W. Aderholt who had received a "hit" on an automobile from NCIC and this car was occupied by five

runaways. Trooper Sullivan was proceeding south on SR-93

at approximately 100 MPH when his left rear tire, Firestone

Steel Belt_ed ^Radial HR-70_ completely sep_araj:j9d_..from. 't^H ^

treadTiu't did not~Io's''e alTTts air, causing Trooper Sullivan

t^T'IosTe^cbntrol .

" He~S^i'dd'en sideways through the median

strip, across two northbound lanes, at the emergency strip

started turning over and turned over four times, coming to

rest upon a fence against a small tree on his side, driver's

side down. Trooper Sullivan has a broken right leg and is now confined to the Alachua General Hospital and in all

probability will be off about three months.

I personally went to the scene before Trooper

Sullivan was placed in the ambulance and observed all the

evidence at the scene and it is my opinion that the entire

cause of the accident was the Firestone tire separating at

high speed,

FHP-1047 was a total loss and attached find

three bids for salvage and I recommend we accept Mott

Chrysler Plymouth, Inc. Live Oak, Florida, bid for $300.00

for this wrecked vehicle.

We have not received a written statement from

Trooper Sullivan because of his Injury but will get one

23
28 September 1973 Page -2-

Accident Involving Trooper T. L. Sullivan - FHP-1047 - 9/24/73

when he is able and a homicide report will follow.

As Trooper Sullivan was enroute to assist

another trooper in the performance of his duties, I do

not feel he was negligent and recommend no disciplinary

action whatsoever.

T, C. Hodges, Captain

Commander - Troop B

TCH/fg

Ends

.

24
ATTACHMENT D-2

Department Of

HIGHWAY SAFETY AND MOTOR VEHICLES

TALLAHASSEE 32304 FLORIDA HIGHWAY PATROL

P.O. Box 332

Lake City, Florida

25 September 1973

COL REID CLIFTON , orREcj DIVISION OF FLORIDA HIGHWAY PATHOL

NEIL KIRKMAN BLDC. JOHN D CALVIN, DIRECTOR

DIVISION OF MOTOR VEHICLES

COLLINS BUDG. _ 107 W. GAINES ST- CLAY W. KEITH. DIRECTOR

DIVISION OF DRIVER LICENSES

NEIL KIRKMAN BLDG. AUDRY CARTER. JR.. DIRECTOR

DIVISION OF ADMINISTRATIVE SERVICES

NEIU KIRKMAN BLOG.

Accident involving FHP # 1047

Trooper T. L. Sullivan, ID # 586

Captain T. C. Hodges

Lieutenant J . E . Love

On Monday, 9/24/73, at approximately 7:45 A.M.,

I was advised that Trooper T. L. Sullivan had been involved

in an automobile accident. Upon arriving on the scene and

completeing an investigation of the accident, I found the following had occurred.

Trooper R. W. Aderholt requested the FHP Station

to check for wanted on a Georgia tag, LAR715. The Station

advised Trooper Aderholt the car was wanted and should be occuj pied by several runaways.

Trooper Sullivan, upon hearing this radio transmission, advised the Station that he was enroute to assist

Trooper Aderholt. Trooper Sullivan was proceeding south on

SR # 93 (1-75) at a high rate of speed when the left rear tire

on FHP 1047 completely separated, causing Trooper Sullivan to

lose control of his vehicle. Trooper Sullivan skidded across

the median and north bound lanes of SR # 93, before turning

over four times.

j My investigation revealed that while speed was a factor, the major cause of this accident was a defective tire.

Due to Trooper Sullivan responding to a^all for

assistance from Trooper Aderholt, I do not feel he ya^ negligent in any way.

T. A. Pace, Sergeant

Troop B - Lake City

TAP /da

SUBJECT

TO:

VIA:

25
ATTACHMENT D-3

FLORIDA T'^ilFFIC A. CCIDE'^T REPORT,/'

MAIL TO: ACCIDCNT RECORDS, .."lAU, DEPT. OF HIGHWAY SAFETY 4 MOTOR VEHu.cS, TAUAHASSEE, FIA. 32304

7«'^5 A.

Col unbl/i

•

, 1 , ^ n-^' Wul'J city

U;e Sl.ii': oi County f^';.ij Nu ihpr oi Nane None

"»'< ' Hijirf.iiy Nir bei c Name ol Itilerseclmg Sireel

^^l' ,2.9_. N S E W No

aKJOG Sli 10 291 80-19. '^7'^

SliQw ncaiesi miiupo^t. i atei_sci

j

mg sii^cl oi ^lle^v^.1y, hutlEe, Rft crossmf;, unjcrpass oi curve

Dll HOT V.=ITC IN SP«Cr AMV

TYPE MOTOR

VEHICLE ACCIDENT

I OTHEK ;.j;rCOLLi: IW III IKAIlSPOKT 'JU OIHlK riOAU-'.AV

Ir-.tAICU'lIT

no

VI H

IN VOLVEO 1

I IAt-. 1973 Dod ge

'E liofian, True, U«, del I virliCLE Lli.i:i5£ PLATE i' k Dr. Sedaih FliP-lO'i-7

SIATE 1973

VEHICLE lOEKIiriCAIhj.'l 1(0 DK/-(-lU3F2lJi.919

15 Scale 3

0 vn.ige Sfv?fily 3500c,00 1^:

EQ'JID- VEHICLE REMOVED BY 3 I Doyles Paint & Body

HAVE Of I'iSURAXCE iLisl.ility Onl(l Pacific Indemnity

POLICY NO LAC9808-92-99

0*fiei ^\

Diiwei I I

O-.vnefs Requcsl

I I Othci (Eiplflin)

I I Rolalio

04'lER 'PrnI 0' Iyer FULL nsnei ADORCSS I Nuribci 3nd sliccll CITY and STATE £lor Ida Highway Patrol Nell Kirkman Bldg, , Tallahassee, Florida

DRIVER 'i 'VcHv J! M d'lvej's license ADTlRlSS I Numbci and sirecll CITY acrf STATE Tim othy Leonard Sullivan Rt. 6 Box 678, La ke City, Florid a 3205 5 irooner

Oi'vet's License Type Op

DRIVER'S LICENSE NU'.'SER s^i58ig^n 3^1-^722

pipnl centpi None

ADDRESS • Numlei and Slieel Fla.

DATE (Monlh, Day, Yean

BIRTH 9/2^4-Al

RACE W

Salely £ 1

Salelj E. Ejecl, Injury

Fiwl lltM

Salety E tied

Salely E Eiecl.

Salely E

TYPE (Sedan, Tiuck, Bus. elc.l VEHICLE LICENSE PLATE NO STATE YEAR VEHICLE IDENTIFICATION NO.

Osmage

Scslc DamageSeveiily

AMOUNT lAppioinalei Salely Equip mcnl

VEHICLE REMOVED BY

NAVE OF INSURANCE ILi.itiilily Onlyl

Qkyncf

[ I

Orivei [ I

I I Owner's Request

I I Olhfi lEiplamI

[~| Rolalion Lisl

UtNER iPrinl oi lype FULL namel ADDRESS iNumoci and sliecll

L'RIVER iE>actly as on dnvci's licensei ADDRESS iNuniliei and slirell CITY and STATE

or

PE OCCUPATION OlIVCl'S License Type

DRIVER'S LICENSE NUMBER STATE DATE iMonlh. Day, Yean OF

BIRTH

RACE SEK Saleir E Eiecl Injiiiy

(N OCCUPANTS Name ADDRESS - iNumliei and Slieell Cily and Slale AGE RACE SEX Salely E. Eiecl, Iniiiiy

UJ Fnnl cenlei

EHICI

FionI [tphl

AGE RACE SEX Salely E. Eiecl. Iniuiy >

Real lell

AGE RACE SEX Salely E, Eiecl. ln|.;iy

ACE RACE SEX Saltly E. Eiecl. h|.jiy

Rp,ir fenler

f

AGE RACE SEX Salety E, tied lUjUiy

TVnce I 50 .00

INvYsircMOH - Nj^e and lanV iSitnjiuiei " ^erg'GTnt

DADCrNO 1 U NO S-97 121

(lll'AHIVLNI FHP

1—1

I— TlAftOF Rri OIII

I I F H P. I I C.P O. so Olhe, 9/2h/'l

26
Fenoe

«ITH Ai;-; h

POI'IT OF IMPACT

T 2 fw\

RijM lionl

Ltll lloni ^ RijW Sfft DLeiMiie O Rear RigM leai Lf II leai

Vehicle # 1 travellni?: s-'Uth on SB // 93 at a hlp;h rate of sneed

The left rear tire came anart causing the driver to lo.te control.

Vehicle # 1 skidded 295* acros?- median, 100* more across northbound

lanes of SH # 93 and then 196* turning over four times and came

to rest on left side heading east.

VEHICLE DEFECTS: Defective Tires.

nComf sIraiEliI ahead ri I I Ovnlaking

WHAT VEHICLES WERE DOING BCEORE «qDENT

VEHICLE No. iMSlra.ehng n^nn On...._ _..Z.-^. Sl^.^.^.T. M.P.H.

VEHICLE No. 2 was tiavelmg On i\ JI.P.H.

1 2 dD im Makrngnghl turn

I I I 1 letf iuin

I 2

I I I I Slowing 01 Slopping

I I I I Changing lanes

t 2

1 )

1 1 Starling (rom paihcd posilion

I ,., J [ I Slopped ot paiked

1 . [ I . j Olher (eiplam above) 'WHAT PEDESTRIAN WAS DOING [—

j

PEOESTRIAN was going O Across or inlo..

[ J Crossing al Interseclion

[ID ^"^^5ing not at Inlriseclion

K.ilKing in foadway - viith Itadrc

Stepped mio path ol Vehicle

[ ] Slandmg in loadway

[ 1 Standing in salety zone

I yng or SillKig on (patlrtiv

h.gKwa^ rx>.) [N.E. fo'n*r lo S. E

[ 1 Gelting on or oH Vehicle

I I Hitching on Vehicle

I ] Pushing or working on Vehicle

[ Other woiki nj; in laidw.iy

Cojo! of Clothing

" Oatk

I 1 Playing in (oadway

[ 1 Olhei foadway

1 I Not in roadway

[ 1 Olttpi leiiit.im above)

LigM

DRIVERS AND VEHICLES

PHYSICAL DEFECTS ' IDiiven •

VEHICLE

DEFECTS

CONTRI- BUTING

CmCUMSTANCES

1^

ACCIDENT

Charocterisfics

Lir,HIIIIC CONDITION

TRAFFIC CONTROL 0 TRAFFICIVAY CHARACTER

TRAFFirv,.\y LANES

CLASS OF TRAFHCHAYS

TYPE IRAFFICKAY

TYrr LOCATION visio; OHSCiirun

AUORLSS - NumlTi ,iiii: ilic ci Cily aitd Sl.ile •iilkin Robbing Jr., 123 Bullocl'- St., Ant. I33, Atlanta Ga,

Earl Snowden Rt. 5 Box 2^3, Lake City, Florida

FiInjI tiO given b\ I-ake City Rcscu'^ Squad

[ I Docloi .< Niiiif Q cm Fiisl Aidn tX] Cfil Fuji Airtn if'tilicc Olhn i Eipl.lini

INlli'-Ul TAKEN TO Br I 1. . I—I,,,.. r , I I Ciiv, Aiihul.ince I lOlhci lEiplainl Lil^r- 3horo Hor'^ltal lake City Re sciie Unit fx^ (iiiv't A-hii,inre

CHlmCAL TEST TESTRESUITS

YES NO

Olirti No 1 ^3

Oiivfi No 2 I 1! I

None

PHOTOtRAI HS TAMN AdT«

I 1 Omw (FirU'nl

"II 11 II ul Afi .III Nl 9/?''/ ,9 73 7«50^

ll"l AHI.IVI II AT V I Nl 7155 A.»nj INVI Sril.AIMN 'Mill Al SCI III

111 nut whfic! Yes

, INVI SIll.AI IHN Ul"l I I IE III m l will 1 Yes

27
ATTACHMENT E-1 j;^RMSTROE\IG RUBBER COMPANY

EXECUTIVE OFFICES 500 SARGENT DRIVE NEW HAVEN, CONNECTICUT

INTER-OFFICE CORRESPONDENCE

FROM A. R. Colborne to F. L. Palmieri

DATE April 2, 1975

SUBJECT G70-15 Load Range B copy to T.C. Fritz, Jr.

High Speed Pursuit 70 E.J. Doyle

Testing Data T.J. Hughes

The G70-15 High Speed Pursuit 70 in a 4 ply nylon

construction was tested on Armstrong's extended version

o£ the FMVSS 109 stepped high speed wheel test.

Each of three tires tested achieved 1/2 Hr. @ 125 MPH

without failure.

The wheel test conditions were as follows:

1) 30 PS-I cold inflation pressure at start of test.

2) Constant 1,380 Lbs. Load throughout test.

3) Wheel room temperature of 100°F.

4) Speeds

1 HR. @ 50 MPH (Break-In)

1/2 HR. @ 75 MPH

1/2 HR. @ 80 MPH

1/2 HR. @ 85 MPH

FMVSS 109 Minimum

Then increase the speed 5 MPH for

each succeeding half hour test

increment

.

I would like to add that in any comparison between indoor

wheel and road high speed testing, the wheel testing must be

considered, by far, the most severe due to the high ambient

temperature required and lack of air circulation.

Outdoor track testing is forthcoming and these results will

be forwarded to you upon receipt.

A. R. Colborne

Project Engineer,

Research § Development

ARC: el

28
TIR£ AND RUBBEP CORPORATION

EXECUTIVE OFFICES: BOX n09, BUFFALO, NEW YOFIK I«40, 716 877-2200. TELEX 9-1240

A WORLD ORGANIZATION

ATTACHMENT E-2

June U,

Mr. Jared J. Collard

Standards Lab National Bureau of Standards

Washington, D. C. 2023U

Dear Mr. Collard:

Enclosed is the certificate of Dunlop Elite RS Radial Patrol tire and specifications. This letter and the information attached has been sent to the various state agencies interested in this tire.

We also have a G78-15 and H78-1S nylon U ply Dunlop RS Patrol certified for 12$ miles per hour of sustained speeds.

If any other information is necessary, please contact me.

Very truly yours,

DONLOP TIRE AND RUBBER CORPORATION

B. P. Klyza, Assistant to the Senior Vice president

BPK/bb

Ends.

29
COPY

CERTIFICATION OF TESTING AND TEST RESULTS

STATE OF TEXAS X

COUNTY OF REEVES X

That on this 16th day of July, 1974, personally appeared before

me, a Notary Public, in and for said County and State, VICTOR F. SPRINGER,

known to me to be the President of the Corporation that executed the foregoing instrument, who upon oath did depose that he is the Officer of said

Corporation as above designated; that he is acquainted with the seal of

said Corporation and that the seal affixed to said instrument is the Corporation seal of said Corporation; that the signature to said instrument

was made by the Officer of said Corporation as indicated after said signature; that the same Corporation execued the said instrument freely and

voluntarily and for the uses and purposes therein mentioned.

IN WITNESS VJHEREOF, I have hereunto set my hand and affixed my

official seal the day and year in this certificate first above mentioned.

SEAL , . ,.>^ (signature)

LETHA E. COATS, NOTARY PUBLIC

IN AI^D FOR REEVES COUNTY, TEXAS

30
COPY

AUTOMOTIVE PROVING GROUNDS, INC.

P. 0. Box 109 Phone 445-5092

Pecos, Texas 79772

I hereby certify that the tests reported belov; were conducted at Automotive Proving Grounds Incorporated on July 13, 1974.

Tires were two (2) Dunlop Radial HR78-15, Identified as EAVYAA 1204,

Numbers Bl & B2.

Tests were conducted under the following conditions:

1. Test tires on two front v/heels of vehicles

2. Cold Inflation - 30 psi

3. Load - 1510 lbs per tire

4. Rim - 6.50 JJ

5. Test Surface - Automotive Proving Grounds High Speed Track

6. Break-in - 54 miles 9 60 MPH

7. Test - 54 miles @ 90 MPH

- 54 miles @ 105 MPH

- 54 miles 9 115 MPH

- 50 miles (3 12 5 MPH

The test was conducted under the above conditions on the (9) nine mile

asphalt test track located at Automotive Proving Grounds, Incorporated,

Pecos, Texas. This track was built for testing of tires and was constructed to simulate

turnpike conditions.

At the end of the test, the tires were inspected and no visable defects

or failures of any nature could be found.

Ambient temperature for the tests was 73"^ at start and 81oF at finish.

The tachograph chart made during the test is attached.

SEAL

S igned : (signature)

Victor F. Springer, President

31
ATTACHMENT E-3

Mr. Jared J. CoTlard, 'Acting M^r.

Police Vehicle Programs

Lavr Enforcement f^tds. Laboratory

Room B-I50, Physics Building

National Bureau of Standards

Washington, D.C. 2023U

April 1, 1975

Dear Mr. Colla-r'd :

Our Washington Office has referred your inquiry concerning

the sizes and typps of tires which Firestone has certified as

s\iitable for high speed patrol and purs\iit tire application to

us. These are listed below. Those sizes and types listed in

Group 1 were sent to you attached to my letter of January 23;

1975' Group 2 lists additional sizes and tjrpes certified for

this usage since my letter and Group 3 lists additional sizes

which are in process of being tested. The latter will be

certified when successful tests are completed.

Size Desc ription

Group 1 . HR75'-15 Super 500 Radial Tubeless

G78-I5 Super 500 Sup-R-Belt

Tubeless

H78-I5 Super 500 Sup-R-Belt

Tubeless

G78-I5 Super 500 Nylon Tubeless

H78-I5 Super 50n Nylon Tubeless

J70-I5 Super 500 Nylon Tubeless

Group 2 . HR78-I5 Super 125 Radial Tubeless

JR78-I5 Super 125 Radial Tubeless

GR70-I5 Super 125 Radial Tubeless

G78-15 Super 125 Nvlon Tubeless

H78-I5 Super 125 Nylon Tubeless

Group 3 . FR70-m Super 125 Radial Tubeless

HR70-15 Super 125 Radial Tubeless

LR78-I5 Super 125 rtadlal Tubeless

C ord Materials

Polyester/Kevlar

Polyester /Fiber glass

Polyester fiberglass

Nylon

Nylon

Nylon

Polyester/Kevlar

Polyester/Kevlar

Polyester/Kevlar

Nylon

Nylon

Polyester/Kevlar

Polyes ter/Kevlar

Polyester/Kevlar

The Super 125 Radial line has recently been announced,

attached is a news release covering this line.

AJD :< att.'

Very truly yours.

A. J. DiMaggio

QUALITY ASSURANCE

32
RECEIVED

APR 1 4 1975

A. J. OiMAGGIO

April 10, 1975

FIRESTONE DEALERS AM) STORES:

SUBJECT: USE OF NORMAL RADIAL PASSENGER CAR TIRES

AS HIGH SPEED "PURSUIT" TIRES

The National Highway Traffic Safety Administration and the Law

Enforcement Assistance Administration have recently cautioned against

the dangerous practice of some highway patrol police organizations

using normal radial passenger car tires in extra-legal high speed

"pursuit" driving. Firestone concurs in this caution and re-emphasizes

the following to its stores and dealers who sell tires to local governmental organizations.

Most tires procured by government agencies vri.ll be used in normal

passenger car service. In such case, our Steel Radial 500 tire re- presents the most economical all-purpose tire for this application.

However, the Steel Radial 500 is not a "pursuit" tire. In the interest

of safety, it should be confined to speeds under 100 mph wher.e permitted

by local law. When used at extra-legal speeds, it is imperative that

cold tire inflation pressures be maintained daily at 32 PSI.

Emergency vehicles, such as highway patrol police vehicles which

are customarily required to drive at speeds in the 100 mph to 125 mph

range, should always be equipped with manufacturer's certified "pursuit"

tires. The following three (3) tires are certified by Firestone as "pursuit" tires and should be used exclusively in such application:

As it is impossible to know whether tires sold to police organizations will be mounted on vehicles employed in routine police service,

or as extra-high speed "pursuit" vehicles, we have advised all stores

and dealers that effective January 21, 1975? they may sell only manufacturer's certified "pursuit" tires to police organizations.

Special attention should be given to cases in which the procurement

is of a general nature, but there is a possibility that some of the tires

procured will or may be used on police pursuit or other emergency vehicles.

In such cases, the above information should be carefully reviewed with

the governmental procurement office or purchasing agent with a view to

obtaining the correct tire for the specific use or application intended.

Super 125 Nylon (Previously Super 500 Nylon)

Super 125 Radial (Previously Super 500 Radial)

Super 500 SRS (Now discontinued)

( over

)

33
-2-

Customers who have purchased radial passenger car tires for a use

which may not be proper under the above guidelines should be contacted

and advised to remove such tires from emergency vehicles and place them

on normal passenger service vehicles belonging to their organization.

You should then attempt to sell them one of the two Super 125 "pursuit"

tires listed above for emergency vehicles use. You should also reemphasize to all of your customers the necessity of daily maintenance

of cold tire inflation pressures at 32 PSI for driving at extra-legal

speeds. This will be particularly critical during the forthcoming Summer

months.

If you have any questions on the above, please contact your district

manager or district truck tire manager.

THE FIRESTONE TIRE & RUBBER COMPANY

34
ATTACHMENT E-4

BFGoodrich

7 VERYIMPORTANT- READIMMEDIATELY!

BULLETIN

Bullecin No.#PP74-65 Date 7-31-74

B.F.GOODRICH TIRE COMPANY

RECOMMENDS PURSUIT RADIAL, STOCK SERIES 302,

FOR USE m ALL TYPE POLICE VEHICLES

B.F.Goodrich Tire Company manufactures three sizes of Pursuit

Radial Tires: Sizes GR, HR, and JR70-15. These tires are constructed

of rayon belts and carcasses and have been tested and certified to be capable of driving up to 125 MPH.

B.F.Goodrich Tire Company strongly recommends that no other tire, bias

bias belted or radial steel, be offered for use on Police vehicles

where the operator could be caused to drive that vehicle in excess

of 100 MPH.

W. A. Kester,

Director of Field Sales

wb

AREA

VL AreaMklg Oirecior X Mgr Area Admtn Sup Relread Service Arch & Const Sup

Sup Retail Service

REGIONS X Regional Mgr X Dist Mgr -Fran Sis X Oist Mgr -Retail Sis X Mgr Reg Sis Admin X Mgr Franchise Sis Contr Tire Men X

Class 1 BFGS X Class 2 8FGS

Leased Dept Sup

Leased Dept Sup Pt BFGS X Comm l Salesmen

Retread Plants BFGS —B«WDepts

Reg Acct g

TAKE FOLLOWING ACTION

1. File in P&PM

3. File in youp

a. Keep until Revised

Mam lal PaSSenger •=.ar-^:,r^r^ After . Page

^. Remove fror -the following:

3FG-4864 7/74 B.F.Goodrioh Tire Company

a Division of The B.F.Goodrich Comoany

TIREOLRS. X F Max

405 E X 410 PR

Associate

Cust Rel &Prod Ser

Cr Mgrs & Sup

Field Auditors Whse S S Mgrs Mgr Direcl Sis Sup Fleet Sis. Spec Conir Repr Sup Mileage Sales

Oil Co Personnel As SpecMieU

LITHO. IN U.S.A.

35
VERYIMPORTANT-READ IMMEDIATELY!

BULLETIN

Bullecin No. GI-75-22 Date March 20, 1975

lEEyr WAR^S POLICE

S£ ^m\N HIGH SPEED Tl

ES

Steel belted radial passenger tires recently received national news coverage when statements were issued by both the Department of Justice

and the Department of Transportation. Highlights of the statements are

as follows:

1. A number of accidents, including two fatalities, have recently

resulted when steel belted radials failed during pursuit in excess of

90 miles per hour. (No B.F.Goodrich tires are involved.)

2. Police agencies should purchase only tires designed for high speed

pursuit for patrol vehicles that exceed 90 miles per hour.

3. Steel belted radials, in consumer use, "provide superior performance

In many aspects of vehicle handling and tire durability."

B.F.Goodrich Recommendation

The B.F.Goodrich recommendation was originally stated in Product and

Price Bulletin 74-65 sent to all retailers in mid- 1974. This

recommendation is emphasized as follows:

"B.F.Goodrich Tire Company manufactures three sizes of Pursuit Radial

Tires (stock series 302-) : sizes GR, HR, and JR 70-15. These tires are

constructed of rayon belts and carcasses and have been tested and

certified to be capable of driving up to 125 mph."

"B.F.Goodrich Tire Company strongly recommends that no other tire, bias,

bias belted, or radial steel, be offered for use on police vehicles where

the operator could be caused to drive that vehicle in excess of 90 mph."

B.F.Goodrich Tire Company TAKE FOLLOWING ACTION

1. File ir. Product & Price Manual. g ^eep further notice.

3. File in your Manual Section After Page

A. Remove from. .the followino:

AREA X Area Mktg Director X Mgr. Area Admin, X Sup Retread Service X Arch. & Const Sup 2

Sup. Retail Service

REGIONS X Regional Mgr. X Dist Mgr -Fran Sis X Dist. Mgr Retail Sis X Mgr Reg. Sis Admin. X Mgr. Franchise Sis. X

Contr Tire Men X Class 1 BFGS X Class 2 BFGS X

Leased Oept Sup X Leased Oept

Sup. Pt. BFGS

Comm'l Salesmen

Retread Plants BFGS —B&W Depts X

Reg Acct'g

TIRE DLRS. X

Key PR X

Net

Other BAT. DLRS. BFG DELCO

A 7A 30

B RP 25

Whiser 7A 20 A&H DLRS. GENERAL X

Mgr Mkt Oevel X

Cust Rel & Prod Ser

Cr Mgrs & Sup X

Field Auditors X

Whse SS Mgrs X

Mgr Direct Sis Sup Fleet Sis Spec Contr Repr Sup MileaciL' Sjles

f.l Co Personnel As Spocilied X Akron List

BFC-4eQ4 12/74 B.F.CSoodrioh Tira Company

a DIvieion of The B.F.Goodrich Company

LITHO IN U.S.A.

36
ATTACHMENT E-5

Jw 5, 1975

Uolted States DspartBent of CoDmere*

National Bnraau of Standards

Vaahington, DC 20234

AttentioBt Jared J Collard, Acting Manager

Polloe Vehicle Frograa Lav Saforoeaent Standard! Laboratory

Subjects High Speed Tires

for Police Vehicles

Gentleaant

In reply to your letter of May 30» 1975 to Mr J V Tiannons of our coDpaBy, ve are furnishing the informatiaD requested on polloe tires aanufactured

by Cioodyear*

Following is a list of available polloe tires iMoh^ at this tine, we have tested and certified to a lalwmi speed of 125 aph.

I. Piflg Typt (Wb Pyptgn)

Certified

67S-15 Polloe Special ^srlon 4 plies syloD body 125 ipb

H78-15 « • •

J78-15 m » n

II. Bias Belted Type (Rib Design)

Q78-15 Police ^>eelal 4 plies polyester 125 mph

Polyglas body + 2 fiberglass belts

H78-15 •

L78-15 « •

37
Jared J Collard Jvme 5, 1975

III. Radial Tires (Rib Deelgp)

Slge PrflPfl Haw Contraction

2 piles polyester

body -h 4 rayon belts

Certified

ORTO-U Police Special 125 aph

Radial

GR70-15

HR70-15 "

JB78-15 "

J»78-15 "

IJ178-15

In addltliai to the above rib design tires j a line of vlnter tread tires

Is also available, >Adcb have been tested and certified up to a wlnlmnn

speed of 115 i^h which Is the staiulard test for Goodyear*

Note: All of the above listed rib and vlnter tires are supplied in lead range B (4 ply rating) construction.

Enclosed Is a brochure covering our police special line of tires idiloh

provides engineering data for each size.

Very truly yours i 7

Manager

Covemnent Sales Department

C T Ulg

evk

38
ATTACHMENT e-6

mailing address: P.O. Box 3467, New Hyde Park P.O., New York 11040 MICHELIN TIRE CORPORATION 480-3500 (212) 895-0900 cable: Pneumiclin Lake Success

Technical Group 2500 Marcus Avenue

Lake Success, h4ew York

31 March 1975

This is to certify that the following Michelin radial steel-belted tires

are designed for maximum speeds up to 130 mph and for handling performance

as required in applications such as police pursuit cars.

Revs Tire Size Overall Overall Loaded Per Max. Tube Designation Rims Width Diameter Radius Mile Load PSI Codes

205HR14XVS 5, SJj, _6i 6h, 7, 7h 8.2 27.0 12.2 773 1730 36 14H913

215HR15XVS 5, 5h, 6, 6h, 7, 7h 8.6 28.5 13.1 726 1860 36 15H913

JBW:abb

ATTACHMENT E-7

PIRELLI TIRE CORPORATION 600 THIRD AVENUE, NEW YORK, N.Y. 10016 212/490-1300

April 2, 1975

PIRELLI TIRES CERTIFIED FOR POLICE USE

Pirelli makes available tires certified for Police use In sizes

215-15 (replaces t«78-l5) and 235-15 (replaces LR78-I5). The

tires are suitable for applications requiring high speed capabilltlesrsuch as Police Pursuit cars, and have:

- black sidewal

I

- load range B

- max. air pressure 32 P.S.I.

- max. speed rating 130 M.P.H.

39

CfU.S. GOVERNMENT PRINTING OFFICE: .1 9 7 7-2 4 0 - 8 4 8 / I 8 3

ANNOUNCEMENT OF NEW PUBLICATIONS ON

NATIONAL CRIME AND RELATED SUBJECTS

Superintendent of Documents,

Government Printing Office,

Washington, D.C. 20402

Dear Sir:

Please add my name to the announcement Hst of new pubHcations to be issued on the above subjects (including this NBS series):

Name

Company

Address

City State Zip Code

(Notification key N-351)


U.S. OEPARTIMEMT OP COMMERCE

National Buraau of Standarda

Waahington, O.C. 20834

II POSTAGE AND PEGS PAID

OFFICIAL BUSINESS " OGPARTMENT^OF^COMMERCe

Penalty for Privatt Use. S300

SPECIAL FOURTH-CLASS RATE BOOK