Kansas Administrative Regulations › Agency 36 - KANSAS DEPARTMENT OF TRANSPORTATION › Article 7 - STUD TIRES › Section 36-7-1 - Definitions

Current through Register Vol. 43, No. 28, July 11, 2024
"Stud" as used herein is a pin-type device prepared for
				installation in the tread design of an automobile tire. It consists of a
				tungsten carbide core bonded to an outer casing or shell of plastic, aluminum
				or steel.
"Stud tire" is an automobile tire fitted with studs in the
				tread design in openings molded for that purpose by the tire manufacturer.
"Body of a tire" is the fabric or cord material to which the
				rubber tread material is bonded.
"Manufacturer" shall be the person or corporation who makes or
				fabricates the body of a tire.
(A)
			 The manufacturer or retreader shall prepare precise specifications for new stud
			 tires and newly retreaded tires covering the number, pattern of installation,
			 type of stud to be used and number of studs to be used in each type of tire for
			 which approval is applied.
(B)
			 Approval may be granted for installation of studs in standard tires and in
			 newly retread tires for which precise specifications are submitted.
(C) When installed, there shall be a minimum
			 of 2/32 inch of rubber between the base of the stud and the cord body of the
			 tire.
(D) When installed, the
			 tungsten tip of the stud shall project not less than .040 inch nor more than
			 .090 inch above the tread surface of the tire. The measurements that are made
			 to see that this is complied with will be made on tires before they have been
			 in use. However, if there is any question as to their requirements, they will
			 be again measured, after the tires have been driven at speeds not to exceed 50
			 miles per hour for a distance of at least 10 miles.
(E) The number of studs per tire shall be
			 controlled by the size of the passenger car tire and shall be within a range of
			 a minimum of 60 and a maximum of 150 for the small, standard size and/or larger
			 passenger car tire.
(F) The rubber
			 surrounding the stud itself where the stud insertion is made must be a minimum
			 of .500 inch in diameter and must be of solid rubber with the stud in the
			 center of this solid rubber area.
(G) Studs must be imbedded in holes premolded
			 in tires.
(H) Studs when inserted,
			 shall be firmly and squarely seated in these holes and in the tire itself.
(I) The studs may not exceed .400
			 inch diameter inclusive of the stud casing.
(J) Studs may be used in tires on single tire
			 passenger vehicles and other single passenger vehicles with rated capacities up
			 to and including 3/4 ton.
(K) No
			 stud tire shall be used on a public highway earlier than November 1st or later
			 than April 15 of any winter season.
(L) The tire or rubber manufacturer shall be
			 responsible for the proper installation of studs in all tires where the studs
			 are inserted by the factory and those tires where studs are inserted by the
			 dealers who operate factory-owned stores. Those companies or tire dealers doing
			 retread operations shall be responsible for the proper installation of studs in
			 any retread tires that they manufacture and shall further be responsible for
			 any insertion of studs that these same companies or dealers insert in new tires
			 in which they apply the studs.
A manufacturer of a stud tire or the retreader seeking such
				approval of his tire for legal sale and/or use in Kansas shall apply by letter
				to the traffic and safety department of the state highway commission, state
				office building, Topeka, Kansas, stating that his product meets all the
				requirements for stud tires as herein contained, and as required by the state
				highway commission of Kansas. The commission reserves the right to require
				additional proof of tire or stud conformity with such requirements.
A provisional certificate of approval may be issued for each
				type tire by the state highway commission providing that:
(1) The manufacturer and/or retreader
			 applies, submitting all required information for each type tire, and therefore
			 certifying that his product conforms with all of the Kansas requirements.
(2) The commission reserves the
			 right to require the submission of one or more pairs of each size tire for
			 which approval is requested as the commission may designate.
(3) The commission reserves the right to deny
			 a certificate of approval for any type of stud tire that does not meet its
			 standards and recommendations.