What is the effect of a bias tire design compared to radial tires?

The correct choice highlights that bias tires have stiffer sidewalls compared to radial tires. This stiffness results from the way the ply cords are arranged in bias tires, which run at angles to the centerline of the tire. This construction leads to a different performance characteristic, particularly in terms of sidewall rigidity.

Stiffer sidewalls can provide improved handling in certain driving conditions, but they also tend to generate more heat and wear down more quickly. This contrasts with radial tires, which have a more flexible sidewall design that allows for better contact with the road surface and improved traction, especially in various weather conditions. The overall performance for characteristics like traction, flexibility, and weight can favor radial tires, making the recognition of the stiffer sidewalls unique to bias tires significant for understanding tire performance dynamics.