[1320racer]

This is good information. I feel our M5s are somewhat finicky vehicles and we are contending with (as you have suggested) a balance in harmonics. We are contending with multiple variables (tires, wheels, rotors, suspension).

Are the pressures you are suggesting trial and error on your part, well known from other M5 owners or what was suggested by your local or BMW USA contact? I run typically between 33-35 cold PSI trying to smooth the ride. The plaque inside the door suggests 35 cold PSI but I will give a try running higher PSIs. I believe most of my specific steering wheel shake was due to my tires being much more worn than I thought.