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tyre diameter and truck pulling to one side

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  • tyre diameter and truck pulling to one side

    Its only taken me 3 yrs and replacing many steering/front suspension compents to figure out why my vehicle pulls to one side
    i had also moved front axle tyre pair to back etc

    It always pulled to left
    recently i swapped front tyres from side to side, and truck started pulling to right!
    So i came to conclusion the tyre on the pull side must be different diameter,
    as air pressures identical!
    i put offending tyre on back drivers side, still a bit of pull to right, but nothing like it was before

    previous owner had these set of camac 4x4 mud tyres put on at same time, so not like one has been replaced,
    also i used a tread depth measuring tool and tread within 1mm on the tyres

    so why on earth the different diameter !!!!
    the tyres are around 4-5 yrs old, do they sag in time?

    they may have been remoulds not sure, would that have an effect - and be a reason for different diameters - and how can you tell if a tyre is a remould?

    will this knacker my diff anymore having different diameter tyres on same axle?
    guess if i finally get round to fitting a truetrac gear lsd diff on the back axle, i should make sure the tyres same diameter first

    at least i know why the thing pulled to left all those years,
    shame i waste time and ££ replacing the pitman, idler arms and steering knuckle ball-joints.....
    Last edited by andycook; 6 June 2007, 15:48.
    Landcruiser Colorado
    Sub. Forester

  • #2
    If you LSD is still working you will put extra wear on it with different diameter tyres on the back, on an open diff it won't matter.

    I've read that Camac tyres are a bit cheap and cheerful, I'd probably advise you try another set of wheels and tyres on it (see a local member will let you try their wheels on for a test run) and see how goes.
    4x4toys.co.uk - Keeping you on and off the road...

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    • #3
      the lsd function of the diff knackered anyway

      remeber Angus who i got truck off saying tyres were cheap, around £55 a corner, so maybe one has lost some of its sidewall rigidity or was never same as others
      they are down to 6-8mm so maybe time for a new set, as wont be much use offroad soon with more wear - good excuse for some new rubber!
      Landcruiser Colorado
      Sub. Forester

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