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  1. #1

    Noise When Reversing

    Hi all, long time no post from Texas. My 2005 automatic 330i ZHP sedan just hit 130,000 miles on my home from work today which is pretty cool. Within the last few days it has begun to make a weird grinding type noise when reversing and going forward for a few miles after initial start-up. After a few miles it is fine and there is no noise when stopping and restarting after being warm. I found on a forum someone with what sounded as similar issue to mine which I posted below in quotes. Have any of you encountered this and could it be something different? If it is indeed the wear sensor am I doing further harm by continuing to drive with it loose? Any guidance much appreciated.

    "Brake wear sensor had come lose, and was getting stuck between the brake caliper and wheel rim."
    2005 Auto Sedan/ Jet Black with Black Leather/ 121,600 miles

  2. #2
    Join Date
    Jan 1970
    Lexington, KY
    hmmmm, if brake wear sensor comes loose, you could try putting it back in its spot.
    Do you have a brake warning light on in the cluster?
    It is such a small piece of metal that I have a hard seeing this causing a "grinding" sound.
    But I could be wrong and will let others chime in.
    325i, 2005, 5MT, Silvergrey, leatherette, Sport package; CDV delete, KONI STR-T & KYB Excel-G, Weisslichts, Stewart H2O pump

    328i, 2010, 6MT, Spacegrey, dakota leather, M-sport packages; has a 330 intake but no tune - yet][IMG]

  3. #3
    Join Date
    Mar 2011
    Independence KY
    Can you tell where the noise specifically is coming from?

    I’m agreeing, I’d find it hard to believe that a wear sensor would make that noise.
    2005 BMW 330i ZHP - BMWP calipers/intake/strut bar/shifter, M3 CSL front/M3 rear rotors, Coby wraps interior, BBS CH wheels, Eagle Eye LED tails, LED fog lights, GC coilovers, Sprint Booster/sport button mod, 4.5 LCM w/ programming, Xtrons 9inch HU, BSW stg1, dynamat, M3 sedan dead pedal, oCarbon CF interior trim, CF seat backs, 2x2 CF MTECH2 diffuser, CF cabin filter cover

  4. #4
    Join Date
    Jan 1970
    Liberty Township, OH
    Brake pad wear sensor is an easy look. Any feedback or update? You should be able to pop your head under there and see if it became unseated from the pad. Or even look through the rim.
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

  5. #5
    Join Date
    Jun 2017
    Western USA
    I had grinding and clunk noises from going Reverse, since I got the car used in 2017. I've been driving it since. I've had my car lifted by my mechanics on so many other ocassions for other issues to fixes\replacements, and the noise is still there. I learned to live with it.

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