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Thread: Strange tyre wear

  1. #1
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    Strange tyre wear

    Car passed the MOT yesterday, straight through with no problems.

    It does however have signs of wearing the inside of the front nearside tyre and the inside of the rear offside tyre.

    Any thoughts on that? As this is the first time I have had the car through the MOT or even looked at the tyres it may not be anything but I can't think of any faults in the geometry that would cause that to happen.

  2. #2
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    Excessive unequal load on wheels possibly compounded by camber and toe slightly out.
    Drives a Smart Cdi - 65 to 85 MPG

  3. #3
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    Quote Originally Posted by tolsen View Post
    Excessive unequal load on wheels possibly compounded by camber and toe slightly out.
    Are you calling me fat?

  4. #4
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    Quote Originally Posted by Mjolinor View Post
    Are you calling me fat?
    Not at all. You most likely weigh less than me although I am aiming for just below 80 kg so I can fit my many shrunk boiler suits.
    Drives a Smart Cdi - 65 to 85 MPG

  5. #5
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    Are the front pair the same size ?
    Ditto the rear ?
    You're so money supermarket and you don't even know it!

  6. #6
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    Quote Originally Posted by tolsen View Post
    Excessive unequal load on wheels possibly compounded by camber and toe slightly out.
    I'd check the seating of the springs - especially the rears.

  7. #7
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    Tyres correct and paired.

    Springs seated OK, I checked it with the MOT man.

    It does have a knock front nearside but we set about it with bars and can't find any play anywhere. The knock is only apparent on certain upward inclined roads under slight acceleration but not a drive shaft noise.

  8. #8
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    Suggest you check front and rear wheel alignment with and without a driver. Also check for dog tracking.
    Drives a Smart Cdi - 65 to 85 MPG

  9. #9
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    Quote Originally Posted by tolsen View Post
    Suggest you check front and rear wheel alignment with and without a driver. Also check for dog tracking.
    Maybe itís had a single spring replaced in the past and the remaining one is tired ?

    Have you checked ride height all round on a level playing field obvs

    (Not an actual playing field of course )
    You're so money supermarket and you don't even know it!

  10. #10
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    Yup, good points.

    Anyone know what the wing <> wheel clearance should be?

    Hmm, have to fire up the 3d printer and run a set of alignment gauges off. I still mostly use a rod that one puts at the back of the wheel then the front of the wheel. Dinosaurish for sure but still functional though you can't do a four wheel track with it.

    The springs do look around hte same age just looking at rust and dirt on them.

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