Question Retreaded tires: Answers May be used on the front axle of a school bus. May be used on the rear axles of a school bus. Cannot be used on a school bus. Explanation Regrooved, recapped, or retreaded tires are not allowed to be used on the front wheels of a bus. This questions appears in the following tests: Arkansas Class A Knowledge Test Illinois HazMat Maryland Class A Knowledge Test New Jersey Class A Knowledge Test