oldsmobile regency disc brake rotor set

Disc brake rotor sets are matched pairs of rotors sold together for a single axle or for all four corners of the vehicle. Purchasing rotors as a set ensures both discs on the same axle are identical in thickness, surface finish, and specification, which is essential for consistent and even braking. Replacing rotors individually increases the risk of side-to-side thickness variation, which can cause the vehicle to pull under braking or produce pedal pulsation.