TM 9-2610-200-14 2-22 CHAPTER 2. CARE, MAINTENANCE, AND INSPECTION (Con't) SECTION III.  UNIT MAINTENANCE (Con't) 2-24.  TREAD DEPTH MEASUREMENT (Con't).   Table 2-4. Military Tire Tread Depth Location Measurements Location From Center Line Tire Size inch (es) cm 7.00-16          9.00-16 8.25-20 9.00-20 11.00-20 12.00-20 14.00-20 3/4 1 1/4 1 1/4 1 1/4 1 1/2 1 1/2 2 1.9 3.2 3.2 3.2 3.8 3.8 5.1 (2)  Truck Tires (16 inch rims or higher).   The minimum tread depth for truck tires (16 inch rim and above) is 4/32 nd inch This dimension applies to both front and rear tires. Measure the tread depth by bridging the tread groove with the contact bar and pressing the plunger into the center of the groove.   (3)  Passenger Car and Light Truck Tires.   The minimum tread depth for commercial tires mounted on the steering axle is 4/32 nd inch. The minimum tread depth for commercial tires mounted on all other axles is 2/32 nd inch. Measure the tread depth by bridging the tread groove with the contact bar and pressing the plunger into the center of the groove.   (4)  Off-road Tires.   The minimum tread depth for off-road tires cannot be definitively stated. Off-road tires should be replaced when the tread is worn to a point that adequate traction is no longer provided for the particular use. The following information is provided as a guide only and should be used when no specific information is available:   (a) Minimum tread depth for industrial vehicles and earth moving equipment (except industrial tractors) is 11/32 nd inch. This includes rough terrain fork trucks, loaders, graders. scrapers, ditching machines, intrenching machines, crane-shovels, and snow removal equipment.   (b) Minimum tread depth for industrial tractors is 17/32^nd inch.