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Thread: Lumpy tyres

  1. #1
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    Default Lumpy tyres

    Just got back from having to have 4 new tyres fitted and have a question about the rear suspension.

    My front tyres were predictably worn across the whole tread. The rears however were completely strange.

    On the inside shoulder, the tread was distinctly lumpy as you looked across the tread . I've never seen anything like this and was wondering if anyone could shed any light on the problem. Is tracking just something for the front wheels or can the rears be adjusted too?

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    Regular Member Gsi3.2's Avatar
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    it's to do with the setup on the rears.. before you do the same to your new tyres you need to get the car wheel aligned..for both camber and toe..

    one of these centres can do it correctly for you..

    www.alignmycar.co.uk

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    Full Member Big Sig's Avatar
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    Could this also be down to worn rear shocks?
    Now I need a turbo to keep up!

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    Regular Member simon1's Avatar
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    Default

    bouncing up and down kerbs when coming of drives .. had a similar prob with my vectra b... thats what the tyre place told me

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    Quote Originally Posted by Gsi3.2 View Post
    it's to do with the setup on the rears.. before you do the same to your new tyres you need to get the car wheel aligned..for both camber and toe..

    one of these centres can do it correctly for you..

    www.alignmycar.co.uk
    So will a full alignment be worth the extra money over a standard tracking check? It says that the cost of an alignment is about the cost of a tyre (£80 ish I guess) but a tracking will be considerably cheaper.

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    Regular Member Gsi3.2's Avatar
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    the full alignment is what you need, and yes it is worth it.. cures all the cars that i see with the problem.. it's dearer than a tracking session, but it does take longer to do, and adjusting the camber normally moves the toe as well, so it is a bit of a fiddle

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    Regular Member m8internet's Avatar
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    Quote Originally Posted by bigknill View Post
    On the inside shoulder, the tread was distinctly lumpy as you looked across the tread
    This is usually a sign that the rear tyres are losing contact with the road, suggesting either worn shock absorber, linkages, or bushes

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    Regular Member Thunder's Avatar
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    & on my last car, scalloping of the rear tyres sounded like a rear wheel bearing on it's way out

    ps: easy way to check is run your hand over the tyres & it's rough one way & smoother the other way

    lol after getting new rear tyres & a full alignment all was fine

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    Quote Originally Posted by m8internet View Post
    This is usually a sign that the rear tyres are losing contact with the road, suggesting either worn shock absorber, linkages, or bushes
    Or , on the vectra C, excess camber caused by poor setup on the rears.. seen it many many times..

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    Well, following the typically excellent advice on here, I've booked the car in to have a 4 wheel alignment on Thursday. Not cheap, but if it saves me the cost of two new tyres before they're dead.

    Cheers for the advice chaps!

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