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Thread: Odd Size Tyres

  1. 10th March 2011, 07:51 PM #1
    Jock The Rock
    Jock The Rock is offline ChatterBox
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    Odd Size Tyres

    To cut a long story short. I bought a second hand set of 285/75 Goodrich All Terrains

    The have a tread depth of approx. 8mm.

    I wrecked one offroad so being a bit tight I bought 2 new ones; so that I have two matching on the front and two matching on the rear

    The new ones have a tread depth of 13mm

    Will this slight difference in tread depth have a detrimental affect on my transfer case ie. excessive wind up?

    Should I go out and buy two more so I have a complete matching set or will I get away with it?


    Thanks
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  2. 10th March 2011, 07:58 PM #2
    85 county
    85 county is offline AULRO Holiday Reward Points Winner!
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    I have run and have just refitted 33" 12.5 R15 BFG ATs
    GOOD rubber a bit prone to punchers.

    any way no probs running the new rubber on the back. keep them there until they equal out a bit before rotating them
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  3. 10th March 2011, 08:18 PM #3
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    PSI250
    PSI250 is offline Master Supporter
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    should be ok, would just be like going round corners constantly!
    1986 Range Rover Hiline
    2004 D2 TD5
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  4. 10th March 2011, 08:26 PM #4
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    bee utey
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    In the past I have measured speedo error many times along a particular 150km piece of road, and never noticed any difference between new and worn tyres. The thing to remember is that the tyres' steel belts are what determine the rolling diameter, and that does not change with wear. The effect of tread blocks distorting under load is insignificant.

    Try and find a trye size calculator and see if they have new and worn values. Bet they don't.
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  5. 10th March 2011, 08:57 PM #5
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    DEFENDERZOOK
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    you shouldnt have any problems with wind-up unless you lock the centre diff.....
    which you shouldnt do on the black stuff......


    so you shouldnt have any problems or worries.......
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  6. 14th March 2011, 06:56 PM #6
    Jock The Rock
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    No worries thanks for all the replies
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