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Thread: Strange uneven rear tyre wear!!

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    Default Strange uneven rear tyre wear!!

    Hope someone can help. I have strange tyre wear on my rear offside tyre, it is wearing in a sort of chevron pattern across the tread but with 4 to 5 cm spacings.
    I'm also get a strange whopping noise from the wheel at all speeds. My thinking is worn bush but it's deciding which one?? I'm a big beleiver in doing work myself if i can as a money saving device but really don't want to change all of them. Plus how hard is it to change them?
    There is no rim rock when i jack the car up so don't think it's the bearing, I'm just at a loss, any and all information/advise is always gratefully received.

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    Regular Member m8internet's Avatar
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    Sounds like shock absorber failure
    Have the entire rear suspension checked, report on any play or worn components

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    Bump

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    Full Member chrisvectra's Avatar
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    Vehicle : VXR8 6.0 muscle SRI ESTATE XP1

    Trim : VXR/ SRI ESTATE CDTI XP1

    Engine : 6.0 V8 Thunder

    Year : 2008

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    when was the last time you had the tracking checked bud
    VXR IS FOR LIFE NOT JUST FOR THRILLS !



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    Regular Member m8internet's Avatar
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    As previous, has the rear suspension been fully checked yet?

    Quote Originally Posted by chrisvectra View Post
    when was the last time you had the tracking checked bud
    On the rear?
    Incorrect rear camber would give you a consistent wear pattern, not patches (often called scalloping)

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    Ex-Staff Full Member Taffyopel's Avatar
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    Are they Falken tyres by any chance?

    Before you spend loads of money and time on bushes, try another set of tyres or wheels. Had Falkens on mine and from the time I fitted them, it sounded like all the wheel bearings had gone. Tried another set of wheels and the noise had gone.

    Worth a try.

    Paul.


    Snowman, you got your ears on?

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    No not falkens and had no problem up until recently. And as said above it would be scrubbing the tyres off in a constant fashion if the tracking was off. I gave my rear end a good going over and couldn't find any excessive play or worn/damaged bushes or parts. Not really sure how I can check shocks?
    Last edited by maximus8425; 30th June 2011 at 19:06.

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by maximus8425 View Post
    Not really sure how I can check shocks?
    Several ways to do this
    Normal method is to bounce each corner, but the Vectra has quite stiff suspension so it is near impossible
    However give it a try, simply place all your weight on one corner and check that the vehicle returns to its original height, and it doesn't bounce like jelly

    Firstly some questions
    Are you getting knocking noises from the rear?
    When passing over a speed bump does the back of the car bounce across the car unevenly (left - right or right - left)?

    Clean the shock absorbers throughly then leave for at least 12 hours (the longer the better)
    Check for leaks, starting at the top

    Finally, have someone drive behind the affected car (ideally with virtually no other or no road users)
    Ideally find a road that is straight and flat, a two or three lane dual carriageway is best
    Watch the rear wheel and watch for it bouncing at specific speeds, starting at 30mph, 40mph, and 50mph, then repeat for the other side
    Last edited by m8internet; 30th June 2011 at 19:34.

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    No there is no noise when I drive, just the strange whopping noise. And no uneven bouncing or movement while driving. I'll give the tyre bouncing a go when I drive and see if anyone can see movement. I had thought of swapping the shocks over on the rear after checking for leaks and see if the noise literally switches sides as i imagine it might if the tyre is bouncing. Cheers

    Max

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by maximus8425 View Post
    No there is no noise when I drive, just the strange whopping noise
    Apologies, missed this noise
    This will be created by the tyre (as the tread depth varies and create harmonic vibration)

    If possible try to determine which side the noise comes from
    Ask a passenger to sit in the rear, roll the windows down, sit in each side and see which is worse

    Where did you obtain the tyres from? (supplied and fitted by the same agent?)
    What tyre pressures are being used?
    What make and specification are the tyres?
    Have these tyres always been on the rear, for how long and how many miles?

    How much tread is left?
    If possible take various measurements, like a clock face and across the tread , giving you 12 measurements per tyre (NSR and OSR) :
    12 A B C
    3 A B C
    6 A B C
    9 A B C
    Where the number is the clock face position and ABC are the tread facing from outside (A) to inside (C)

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