Flashcard 4 - General Knowledge Flashcard Set for the CDL

4/32nd of an inch on front or steer tires
2/32nd of an inch on all other tires

Buses may not use retreaded, recapped, or regrooved tires on a steering axle.

Trucks can use retreaded, recapped, or regrooved tires on a steering axle—but it is generally not done—except in low-speed, in-town service.