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Thread: Front LH Wheel Grinding

  1. #1
    Registered User Holiday's Avatar
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    Front LH Wheel Grinding

    Fellas,

    Hoping one of you can point me in the right direction on a recent issue with my car. Recently started experiencing a 1-per wheel revolution grinding noise, coming from my front left wheel. It's minimal when making left turns, but steady with any other wheel position.
    In the last year, I've found a lot of braking oscillation after installing EBC Red's. Seems as though the pad is of a much harder compound than the oem's, and cuts into the rotors like butter. Could the two be related?

    Normally, I'd just take it into the dealer, but sadly- the nearest one is 1.5 hrs out! Thanks in advance.
    2003 Audi RS6- Pearl Black Effect
    Eurocharged ECU/MTM TCU, Hyperboost DV, RSN-E/BT/XM, K&N, EBC-RED

  2. #2
    Registered User hahnmgh63's Avatar
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    May seem like a silly suggestion but any chance somebody who installed your brake pads bent the rotor backing plates and it rubs? They can make a real serious noise when they touch the rotor. And it can be a pulsating sound at times as the rotors runout after mounting to the hubs are rarely perfect.
    2003 White RS6 2013 Midnight Blue S5
    2013 Daytona RS5 2x944 Turbo's 1974 911 w/'91 3.6ltr motor
    Roy, WA

  3. #3
    Registered User Holiday's Avatar
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    Quote Originally Posted by hahnmgh63 View Post
    May seem like a silly suggestion but any chance somebody who installed your brake pads bent the rotor backing plates and it rubs? They can make a real serious noise when they touch the rotor. And it can be a pulsating sound at times as the rotors runout after mounting to the hubs are rarely perfect.
    Don't think so- the rubbing noise is solid friction, and it only began a week ago. The rotors and pads were installed new over a year ago. Regardless, I'll look into it. Any more ideas?
    Thanks Hahn!
    2003 Audi RS6- Pearl Black Effect
    Eurocharged ECU/MTM TCU, Hyperboost DV, RSN-E/BT/XM, K&N, EBC-RED

  4. #4
    Registered User V8weight's Avatar
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    Sounds like a bad wheel bearing?
    Pat - Eisenmann race exhaust, Catless downpipes, KW V3's, H-Sport sways, 034 Control arms, Apikol diff mount, Sterns motor mounts, Forge dv's, Stainless brake lines, Venair hoses, Sportec vent mod, Euro tails, Viper Tuned ecu/tcu, DPE S20's 19x9.5, 275/30/19's

  5. #5
    Registered User Holiday's Avatar
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    Quote Originally Posted by V8weight View Post
    Sounds like a bad wheel bearing?
    I'm almost positive that's what it is. Taking it to the dealer today. Suppose it would make sense to replace all 4 if one of them is starting to go bad. Sound logic Pat?
    2003 Audi RS6- Pearl Black Effect
    Eurocharged ECU/MTM TCU, Hyperboost DV, RSN-E/BT/XM, K&N, EBC-RED

  6. #6
    Registered User V8weight's Avatar
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    Quote Originally Posted by Holiday View Post
    I'm almost positive that's what it is. Taking it to the dealer today. Suppose it would make sense to replace all 4 if one of them is starting to go bad. Sound logic Pat?
    That's up to you, it's a lot of labor to replace all four wheel bearings. I personally would just replace the bad one.....there's no labor overlap to do them all at once.
    Pat - Eisenmann race exhaust, Catless downpipes, KW V3's, H-Sport sways, 034 Control arms, Apikol diff mount, Sterns motor mounts, Forge dv's, Stainless brake lines, Venair hoses, Sportec vent mod, Euro tails, Viper Tuned ecu/tcu, DPE S20's 19x9.5, 275/30/19's

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