Why is wheel balancing not required for rear wheels?
1 Answers
Rear wheels do not require wheel balancing because: the rear wheels have neither been replaced nor had tire repairs, meaning the mass distribution of the rear wheels remains unchanged. When rear wheels are replaced or repaired, their mass distribution gets altered, making wheel balancing necessary at that time. Reasons that may change a tire's mass distribution include: 1. Manufacturing tolerances during tire production, or inaccurate axle centering during wheel hub/brake drum machining; 2. Uneven mass distribution among wheel hub bolts; 3. Tire wear, out-of-round conditions, or deformation; 4. Mud accumulation on specific tire sections after off-road driving, increasing localized mass; 5. Tire repairs or replacement of tires/wheel hubs.