by Mitchell 1

Mitchell 1 provides TSB information to Auto Service Professional, an online edition of Auto Service Professional magazine, which fulfills a critical role in the automotive aftermarket by providing technical information to independent auto repair facilities and new car dealer service departments. We’re sharing this content in our blog, with a link to the Auto Service Professional website where you can read the article in full. Enjoy!

 

 

 

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At left is a standard brake disc. At right is a lightweight brake disc. This bulletin applies to vehicles equipped with the lightweight brake disc.

This bulletin applies to BMW vehicles equipped with wheel bolt patterns of 5×120 and 5×112.  If a ticking noise is heard coming from a front wheel while cornering without the brakes applied at low speed, it’s likely that microscopic movement of the contact interface between the inner brake disc and the wheel bearing flange on vehicles equipped with lightweight brake discs. Remove both front brake discs and install a friction ring between the brake disc and the wheel bearing flange.

Install a friction ring between the brake disc hat and wheel bearing flange.