Specifications

REAR TIRE
The rear tires shall be Goodyear 12R-22.5 16PR "H" tubeless radial G622 RSD mixed service tread.
The rear tire stamped load capacity shall be 27,120 pounds per axle with a speed rating of 75 miles per
hour when properly inflated to 120 pounds per square inch.
The Goodyear Intermittent Service Rating load capacity shall be 29,020 pounds per axle with a speed
rating of 75 miles per hour when properly inflated to 120 pounds per square inch. The Goodyear
Intermittent Service Rating limits the operation of the emergency vehicle to no more than fifty (50)
miles of continuous operation under maximum recommended payload, or without stopping for at least
twenty (20) minutes. The emergency vehicle must reduce its speed to no more than 50 MPH after the
first fifty (50) miles of travel.
REAR AXLE RATIO
The rear axle ratio shall be 6.43:1.
TIRE PRESSURE INDICATOR
There shall be a voucher provided with the chassis for a dial style tire pressure indicator at the front tire
valve stem and a pop up style tire pressure indicator at the rear tire valve stem. The indicator shall
provide visual indication of pressure in the specific tire.
The tire pressure indicators shall be redeemed upon the vehicle manufacturer’s receipt of the voucher for
installation by the customer.
FRONT WHEEL
The front wheels shall be Alcoa hub piloted, 22.50 inch X 9.00 inch LvL One™ polished aluminum
wheels. The hub piloted mounting system shall provide easy installation and shall include two-piece
flange nuts. The wheels shall feature one-piece forged strength and shall include Alcoa’s Dura-Bright
®
finish with XBR technology as an integral part of the wheel surface. Alcoa Dura-Bright
®
wheels keep
their shine without polishing. Brake dust, grime and road debris are easily removed by simply cleaning
the wheels with soap and water.
REAR WHEEL
The rear wheels shall be Alcoa hub piloted, 22.50 inch X 8.25 inch LvL One™ aluminum wheels with a
polished outer surface and Alcoa Dura-Bright® wheel treatment with XBR® technology as an integral
part of the wheel. The hub piloted mounting system shall provide easy installation and shall include
two-piece flange nuts.
WHEEL TRIM