Code of Maryland Regulations › Title 11 - DEPARTMENT OF TRANSPORTATION › Subtitle 22 - MOTOR VEHICLE ADMINISTRATION-PREVENTIVE MAINTENANCE PROGRAM › Chapter 11.22.02 - Preventive Maintenance Standards for Trucks and Truck Tractors › Section 11.22.02.07 - Tires

Current through Register Vol. 51, No. 14, July 12, 2024
A. Tire
				Inspection-Steering Axle.
Procedures:
Reject Vehicle If:
(1) Inspect for tire wear. (a) Tires without tread wear
						  indicators. (b) Tires with tread wear indicators.
(1) (a) Tire is worn so that less than 4/32 inch remains
						  when measured in any two major grooves at three equally spaced intervals around
						  circumference of a tire. (b) Tread wear indicator contacts the road in any two
						  adjacent major grooves at three equally spaced intervals around circumference
						  of a tire.
(2) Inspect for tread cuts, snags, or sidewall
						  cracks.
(2) Tire has tread cuts, snags, or sidewall cracks in any
						  direction and deep enough to expose cord fabric.
(3) Inspect for exposed cord fabric.
(3) Tire has any part of the breaker strip or casing ply
						  exposed in the tread.
(4) Inspect for bumps, bulges, or knots.
(4) Tire has visible bump, bulge, or knot related to
						  tread or sidewall separation.
(5) Inspect for patching.
(5) Tire has a boot, blowout patch, or other ply
						  repair.
(6) Inspect for tire matching.
(6) Bias ply and radial ply tires are mixed on same axle,
						  or tires on same axle are not equivalent to size recommended by tire or vehicle
						  manufacturer.
(7) Inspect for restricted usage.
(7) Tire is labeled "Not for Highway Use" or other
						  labeling which excludes use on a steering axle.
(8) Inspect for regrooved or recut tires.
(8) Tire is regrooved or recut and regrooving or
						  recutting is not permitted by tire manufacturer.
(9) Inspect for proper mounting.
(9) Tire has tire flap protruding through valve stem slot
						  in rim.
(10) Inspect valves and valve stems for leaks and
						  mounting.
(10) Valve stem leaks, is damaged due to misalignment, or
						  is positioned to interfere with checking tire air pressure.
(11) Inspect for wheel and tire mounting.
(11) Tire or wheel contacts vehicle chassis or body.
(12) Inspect for weight limit rating.
(12) Gross vehicle axle weight exceeds tire load rating,
						  which includes under-inflated tires.
B.
				Tire Inspection-Nonsteering Axle.
Procedures:
Reject Vehicle If:
(1) Inspect for tire wear.
(a) Tires without
						  tread indicators.
(b) Tires with tread wear indicators.
(1) (a) Tire is worn so that less than 2/32 inch remains
						  when measured in any two major grooves at three equally spaced intervals around
						  circumference of a tire. (b) Tread wear indicator contacts the road in any two
						  adjacent major grooves at three equally spaced intervals around circumference
						  of a tire.
(2) Inspect for tread cuts, snags, or sidewall
						  cracks.
(2) Tire has tread cuts, snags, or sidewall cracks in any
						  direction and deep enough to expose cord fabric.
(3) Inspect for exposed cord fabric.
(3) Tire has any part of the breaker strip or casing ply
						  exposed in tread.
(4) Inspect for bumps, bulges, or knots.
(4) Tire has visible bump, bulge, or knot related to
						  tread or sidewall separation.
(5) Inspect for patching.
(5) Tire has a boot, blowout patch, or other temporary
						  ply repair.
(6) Inspect for tire matching.
(6) Bias ply and radial ply tires are mixed on same axle,
						  or tires on same axle are not equivalent to size recommended by tire or vehicle
						  manufacturer.
(7) Inspect for restricted usage.
(7) Tire is labeled "Not for Highway Use" or other
						  labeling which excludes use on a highway vehicle.
(8) Inspect for regrooved or recut tires.
(8) Tire is regrooved or recut and regrooving or
						  recutting is not permitted by tire manufacturer.
(9) Inspect for proper mounting.
(9) Tire has tire flap protruding through valve stem slot
						  in rim.
(10) Inspect valves and valve stems for leaks and
						  mounting.
(10) Valve stem leaks, is damaged due to misalignment, or
						  is positioned to interfere with checking tire air pressure.
(11) Inspect for wheel and tire mounting.
(11) Tire or wheel contacts vehicle chassis or body.
(12) Inspect for weight limit rating.
(12) Gross vehicle axle weight exceeds tire load rating,
						  which includes under-inflated tires.
(13) Inspect spare tire storage (if equipped).
(13) A spare tire is not properly secured.