WM 440594 Balancing/Optimizing Wheels (All Models): Information: Recommendations/Requirements

Wheel suspension elements must be in good technical order.

The wheels must be clean with no foreign objects in the tire.

Use a tire measuring gauge, e.g. measuring gauge Nr.136  to check radial and lateral runout values on wheels without flat spots. Values of less than 1 mm are desirable - around 0.5 mm would be better.

To limit the number of radial runout errors and to optimize rolling smoothness, it is a good idea - and even necessary in some cases - to match the tire (i.e. to fit it in a favorable position with respect to the wheel). Follow tips and fitting instructions as well as information on tire mounting paste for tires.

If the disc wheels (wheels without tires) are perfect but the complete wheels have large axial and radial runout values (due to ply breakage or other damage), it may be necessary to replace the tire.

Balance used wheels only after they have been warmed up by driving, otherwise flat spots will simulate imbalance. Never perform matching in the case of flat spots. In the event of flat spots, wheels must be warmed up by driving 15 - 18 MPH (25 - 30 km) . Lift up the vehicle immediately on return. This prevents new flat spots from forming.

Correct tire pressure is an important prerequisite.

Place the balancing weights at the prescribed position.

When fitting the wheel to the wheel hub and brake disc, the contact surfaces must be clean (free of dirt)  .