Quote:
Originally Posted by F80JMcD
Over the last 3k miles I've noticed what I can only describe as a grinding noise (or something loose) coming from the passenger rear but only under very hard acceleration. I notice it the most in gears 1, 2, and 3, so mostly when the wheels want to spin - DSC is off. The car goes in for service in 3,600 miles so I'll have it looked at then. Curious whether anyone else has encountered anything similar. I'll try to capture the sound and post a video shortly.
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F80JMcD,
Sounds like a very common issue with the M4/M3. Most probably due to a small rock getting stuck in between the rear brake rotor and the rotor shield. You can gently open the gap with your hand to stop this happening again.
Mad.