What is the difference between radial and bias ply tires, and what are their respective advantages? The main difference between radial and bias ply tires is how they are constructed. According to For Construction Pros, Radial tires are constructed in two parts. The casing has one layer of rubber-coated steel cables that arc from one bead to [...]The post Radial vs Bias: What you need to know appeared first on OTR Wheel Engineering, Inc..