44 Van-Type Vehicles Weighing More Than 10,000 Pounds

441 Tires and Brakes

441.1 Tires

No motor vehicle may be operated on any tire that has fabric exposed through the tread or sidewall.

441.11 Front Tires

Front tires must have a tread-groove-pattern depth of at least 4/32 of an inch when measured at any point on a major tread groove. Do not take these measurements where bars, humps, or fillets are located.

441.12 Rear Tires

Rear tires must have a tread-groove-pattern depth of at least 2/32 of an inch when measured in a major tread groove. Do not take these measurements where bars, humps, or fillets are located.

441.2 Brakes

Vehicles must have a service brake system that can effectively control the movement of the vehicle and stop the vehicle. Vehicles must have a parking-brake system adequate to hold the vehicle under any conditions.