3.4.9 Axles. Axle ratings shall be at least equal to the load imposed on each axle
measured at the ground, with the vehicle loaded to specified GVW. A single speed, single
reduction rear axle shall be furnished. Wheel bearings and axle spindles shall be oil lubricated.
The hubcaps, except for driving axles, shall have a window for visual determination of oil level.
Provisions for venting or withstanding internal pressure buildup and for replenishing the oil
supply shall be provided.
22.214.171.124 Traction control. When specified (see 6.2), the vehicle shall be furnished with a
traction control on the rear axle. The traction control shall actuate automatically to ensure that
power is transmitted to the wheel having traction when the opposite wheel loses traction.
Maximum traction capabilities shall be maintained at all times under each drive wheel for the life
of the vehicle.
3.4.10 Wheels, rims, tires, and tubes. The vehicle shall be equipped with single front
and Tyre and Rim Technical Organisation recommendations for the type and size of tires
furnished. Except when tube type tires are specified in procurement documents, multi-piece rims
shall not be furnished. Rim and disc wheel sizes shall be the same for all wheels on each
vehicle. Tire size and load range (ply rating) shall be the same for all tires on each vehicle.
When specified (see 6.2), disc type wheels shall be furnished.
126.96.36.199 Tires. Unless otherwise specified (see 6.2), tires shall be tubeless type with
highway tread. Unless otherwise specified, low profile or standard profile tires may be
furnished. When specified (see 6.2), low profile tires shall be furnished. Tires shall be of the
steel belted radial type or when specified (see 6.2), bias ply. Tires shall be of rated capacity at
least equal to the load imposed on each tire, measured at each wheel, at the ground, with the
vehicle loaded to the specified GVW. Tires and tire size designation systems shall conform to
the Tire and Rim Association or to the European Tyre and Rim Technical Organization
188.8.131.52 Inner tubes. When tube type tires are specified in procurement documents,
inner tubes shall be of the heavy duty type, and shall be of the proper size for the tires furnished.
Tire flaps shall be provided for tube type tires in accordance with the 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 safe removal or
mounting of the spare wheel assembly using only tools specified in 220.127.116.11. The carrier shall
enable the safe removal and installation of the spare tire assembly from and to the vehicle and