Are Bias Ply Tires Illegal? Explore Their Legality, Safety Standards, and Comparisons
Bias ply tires are not illegal, but they are mostly outdated for regular road use. The FMVSS No. 109 sets guidelines for their use. They are mainly suitable for off-road and drag racing applications. Mixing bias ply with radial tires on the same vehicle is typically prohibited, especially under NHRA rules. Safety standards focus on … Read more