Member, P500 Sport, DSC off (>900)
Join Date: Mar 2010
Thanked 306 Times in 203 Posts
Took my M5 to a local Dobbs Tire Center (against my better judgment) and they found a half golf ball sized bulge on the inside sidewall facing the undercarriage of the right rear tire. They contacted Michelin and they wanted the tire to analyze it. It had 8356 miles on it with no track use, but may have been the victim of a pothole, however the wheel itself was straight and true with no damage. They tracked down two PS2s for me and I got two new rears for $310 installed with Michelin covering the rest. Michelin has made me a customer for life with their goodwill! That "tire defect" light really does work as it's supposed to. The mechanic felt I should get an ABS or traction control (DSC) light if one of the sensors failed. He also thought that with the use of what he called BMWs "rolling sensors" the bulge could have distorted the tire at speed and slightly changed the circumference of the tire under different speed and road conditions.
Last edited by JimBeemer; 15th January 2012 at 02:32 PM.