Do Rear Wheels Need Dynamic Balancing?
2 Answers
Rear wheels of a car do require dynamic balancing. Situations that necessitate dynamic balancing include: 1. After replacing new tires or post-collision repair; 2. Unilateral wear on front or rear tires; 3. Excessive heaviness or shaking of the steering wheel while driving; 4. The car veering to the left or right when moving straight. Dynamic balancing is a process where weights are added to the wheel in motion to correct the balance of each edge part, aiming to maintain the wheel's balance during rotation. A car's wheel is an assembly of the tire and rim. However, due to manufacturing variations, the mass distribution across the assembly may not be perfectly uniform. When the wheel rotates at high speeds, this can lead to dynamic imbalance, causing the wheel to shake and the steering wheel to vibrate during driving.
I've been repairing cars for over a decade, and many people overlook rear wheel balancing. Actually, whether it's front or rear wheels, any rotating tire needs balancing. Especially when driving at high speeds, if the steering wheel doesn't shake but the whole car feels floaty, it's likely due to unbalanced rear wheels. Last month, a BMW 3 Series owner came to the shop—he had new tires installed but didn't balance the rear wheels. When he drove at 110 km/h, the back seats vibrated like a massage chair. Balancing is actually super simple—just attach lead weights to the inner side of the rim. If you frequently drive long distances or just changed tires, I highly recommend balancing all four wheels. It costs just around a hundred bucks but gives you a rock-solid driving experience.
