BMW Ticking
This bulletin applies to all BMW 3, 4, 5 or 6 series vehicles equipped with a wheel bolt pattern of 5 x 120 and 3, 4, 5, 6, 7 or 8 series equipped with a wheel bolt pattern of 5 x 112. A ticking noise may be heard from a front wheel while cornering without the brakes applied, most noticeable at low speeds. This may be due to microscopic movement of the contact interface between the inner brake disc and the wheel bearing flange on vehicles equipped with lightweight brake discs.
Check which type of brake rotors are on the vehicle. See the photo to identify rotor type. If lightweight rotors are on the vehicle, remove the rotor and clean the bearing flange with brake cleaner. Install a “friction ring” on the wheel bearing flange. Reassemble. Do this for both wheel locations on the same axle. Note that BMW recommends replacing all wheel bolts at this time.
Friction ring for 5 x 120 rotors................ 34 10 6 887 529
Friction ring for 5 x 112 rotors.................34 10 6 884 839
Install a friction ring onto the wheel bearing flange.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike MavrigianMike Mavrigian
Motor Age Editor
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
