[claykin]

Originally Posted by BavarianFanatic

The bulletin brings to light the fact that there may be issues with error stacking among the various components. You can easily have an assembly of parts that each individually are within allowable tolerances, but when assembled as a whole unit are outside of allowable tolerances. That's why they have such a detailed step-by-step procedure. Normal troubleshooting will usually only check individual components. A situation such as this is far more difficult to pinpoint.

Has anyone ever kept tabs of the tire models on the effected cars? It's plausible the tires are generating a frequency that aligns with the resonant harmonic of the suspension.

It's clear that BMW has put some thought into the details of this bulletin. It's also clear they're collecting data for further analysis if the dealers aren't able to identify the problem. It's a process. You can't just assume the fix on one car will be a univeral solution. Blindly throwing parts at a car is just plain wasteful. I still think a great deal of this is due to the tires or completely unrelated to the rolling stock.

Agreed!