[Answer] On a vehicle with single piston floating caliper front disc brakes the brake pads on the left side of the vehicle are almost completely worn while the right side is almost new. Tech A says that too much rotor runout could be the cause. Tech B says that a binding caliper piston could be the cause. Who is right?A. Tech AB. Tech BC. BothD. Neither

Answer: B. Excessive rotor runout would cause a pulsating brake pedal but not uneven side-to-side pad wear. A frozen caliper piston on the other hand will keep both inner and outer brake pads equally applied against the rotor even when the brake pedal is released. This constant friction will cause rapid pad wear in the affected caliper as well as a front-end pull.
On a vehicle with single piston floating caliper front disc brakes the brake pads on the left side of the vehicle are almost completely worn while the right side is almost new…

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