When installing new brake rotors, we recommend checking the lateral runout. This will tell you if any variation exists between the rotor and the mounting surface. Lateral Runout (LRO) refers to situations where a rotor’s thickness stays the same, but the rotor plates are wobbly or move from side to side. As lateral runout becomes excessive, it causes pad and rotor wear. Lateral runout typically feels like a dynamic imbalance problem in either the brake pedal or the steering wheel. Depending on t