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rear diff

Discussion in 'A4/S4 forum(B5 Chassis)' started by Iceash, Mar 26, 2012.

  1. Iceash
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    Iceash Member

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    Hi all, If a rear diff is ill, what's the symptoms?

    When I'm travelling at 30mph I hear a slight wher wher sound from the rear when I pass 30 it goes.

    I'm almost sure it's tire road noise. But thought I'd check with you guys... It is running low profile 17's
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  2. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    The diff seals can leak, might be an idea to check and if theres signs of leaking get the oil topped up.
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  3. Iceash
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    Iceash Member

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    looked all dry when I was under there. So they don't make a sound then? lol
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  4. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    Not unless they're worn or solidly mounted. My avant has solid diff and subframe mounts and it whines a fair amount.

    I'd ignore it, and see if it gets worse. ;)
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  5. Iceash
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    Iceash Member

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    lol, it' goes after 30mph sure it's tire noise. Solid diff? what's than then?!?
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  6. PAULF
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    PAULF Active Member

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    Could also be the rear wheel bearings
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  7. Iceash
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    Iceash Member

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    good point :)
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