[mhughett]

Originally Posted by seank

If breaking faster is an issue, have you tried different pads with the stock set-up? Why do you need a bbk, but still have stock wheels?

This car has had problems with rotor runout (vibrations), with the original owner as well as me, even when there has been no track time. It has probably had 7 sets of front rotors during the 4-year warranty period. I have bedded the new brakes (per Zeckhausen instructions) and it still has done it. The dealer has tried to find the cause but says that all brake components are working properly. However, each time they drove the car and measured the runout and agreed that the rotors should be replaced. During the 4 years of warranty coverage, they were unable to determine the cause. All 7 sets of rotors were paid for by BMW. However, the car is now out of warranty and I thought a BBK might fix the problem once and for all. I've posted this problem on this board and it seems no one else has had similar problems.