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Message: <blockquote data-quote="KL2DC" data-source="post: 177620" data-attributes="member: 3452">I have the same low-speed (up to 10mph) grinding sound as well. In my case, it happened to be those darn RFTs. I am planning to take it up as a warranty claim. Admittedly, I must say, I haven't been pussyfooting my E90 that much...but still <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" /> There is an announcement by Bridgestone on feathering/cupping of the EL42s. Amusingly, they are now recommending rotation every 3k miles <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes    :rolleyes:" loading="lazy" data-shortname=":rolleyes:" />  JV88: Based on my experience, I was leaning towards proper alignment/balancing since you've done suspension work and wheel/tire change, to cure the 'grinding' sound. Not sure what the factory specs are, perhaps you can bug your SA for them, but a member on e90post did his alignment (330i Sport) recently and got this printout... <img src="http://i46.photobucket.com/albums/f143/kl2dc/e90alignmentspecs.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>