vehicle loaded to specified GVW. Tires and tire size designation systems shall conform to Tire
and Rim Association or to the European Tyre and Rim Technical Organisation
188.8.131.52 Inner tubes. When tube type tires are specified in procurement documents, inner
tubes shall be of heavy duty type, and shall be of proper size for the tires furnished. Tire flaps
shall be provided for tube type tires in accordance with Tire and Rim Association
184.108.40.206 Carrier for spare tire assembly. When specified (see 6.2), a carrier for a spare
wheel or rim and tire assembly shall be installed in a readily accessible location on the vehicle.
Threaded fasteners, when used to secure the spare tire in the carrier, shall be constructed of or
plated with corrosion-resistant material. The carrier design shall enable removal or mounting of
spare wheel assembly using only the tools specified in 220.127.116.11.
18.104.22.168 Spare wheel or rim. When specified (see 6.2), a spare wheel or rim shall be
furnished. When a spare tire assembly is specified (see 22.214.171.124), a spare wheel or rim shall be
126.96.36.199 Spare tire assembly. When specified (see 6.2), a spare tire assembly shall be
furnished. The spare tire assembly shall include an inflated spare tire mounted on the spare
wheel or rim. The spare tire shall be of the same size, tread design and load range (ply rating) as
the tires furnished on the vehicle.
188.8.131.52 Tire chain clearance. Tire chain clearance shall be furnished. Clearance shall be in
accordance with SAE J683. Allowance for spring deflection shall be included.
* 3.4.11 Brakes. Brakes shall conform to Federal Motor Carrier Safety Regulations 393.40
through 393.43 and 393.45 through 393.52. Brake linings shall be of nonasbestos material.
184.108.40.206 Service brakes. The vehicle shall be equipped with full air brakes on all wheels.
The braking system, complete with all necessary components, shall include:
(a) Air compressor, unloader head type, engine driven and engine lubricated, air or
water cooled, and having a capacity of not less than 7-1/4 cubic feet per minute
(cfm) for class A and B vehicles and not less than 12 cfm for class C, D and E
(b) Air storage reservoir(s), each tank equipped with drain cock, and with safety and
check valves between compressor and last reservoir tank
(c) Foot control, suspended or treadle type
(d) Air control valves
(e) Air pressure gage, visible to the driver