Radial and bias-ply tires: Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Radial and bias-ply tires: Answers Should be used together on all axles. Should be used together, but only on the rear axle. Should not be used together. Explanation When inspecting your vehicle, ensure that radial and bias-ply tires are not being used together. This questions appears in the following tests: Illinois Double Indiana Passenger Nevada Class B Knowledge Test Nevada Class B Knowledge Test Tennessee Bus Wyoming Class A Knowledge Test