For a vehicle with radial tires, what is required regarding the tires?

For a vehicle equipped with radial tires, it is essential that all four tires match in type and design, meaning they should all be radial tires. This requirement is critical because mixing tire types can lead to handling issues and affect the overall safety and performance of the vehicle. Radial tires have different construction and performance characteristics compared to bias-ply tires, which can cause uneven traction, complicate steering response, and create potential stability problems while driving.

When all four tires are of the same type, particularly matching in tread pattern and construction type, the vehicle maintains balanced handling and performance. This uniformity helps to ensure optimal grip on the road and proper alignment, reducing the risk of tire blowouts and other related safety hazards.

In contrast, having only one radial tire among others that differ in type or brand would result in a disparity in performance and handling. Likewise, mixing radial and bias tires is not acceptable as they perform differently under varying driving conditions, leading to unsafe driving dynamics. Hence, maintaining uniformity with all four radial tires is the safest and most effective choice for vehicle stability and performance.