to a standard wheel balance. Here is the difference: a regular balance spins the wheel and tire assembly and determines where the heavy spot is. It will then ask the technician to place weights opposite the heavy spot so that the assembly is balanced. That's it. A roadforce balance also spins the wheel and tire assembly only there is a huge drum that applies 800 lbs of pressure to the tire as it spins, simulating the tire running down the road. The roadforce balancer will check the tire for heavy spots, check the wheel for roundness, and then tell the tech if everything is in spec. If the assembly does not pass, the machine will tell the tech to turn the tire (index) on the wheel to a better position, whether it is 180 degrees or just a tiny amount. This allows the tire to run more smoothly. There is a HUGE difference in the ride quality between the two types of machines.
Roadforce balancing is what new car manufacturers use. When your tires are mounted onto your wheels at the BMW plant, they use a roadforce balancer.
A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more!