Wheels and Tires

Wheels and Tires

The Caterpillar 797 series haul trucks run on the largest tire in the world, the 4.028 m (13.22 ft) tall, 5,300 kg (11,680 lb) Michelin 59/80R63 XDR. This radial tire was developed by Michelin in conjunction with Caterpillar specifically for the 797. Six tires are required per truck at a cost of approximately USD $42,500 per tire.

Each wheel is attached to the axle using 47 nuts that are torqued to 2,300 ft·lb (3,118 N·m).