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Thread: UNEVEN TYRE WEAR ON INNER EDGE

  1. #1
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    UNEVEN TYRE WEAR ON INNER EDGE

    Hi Guys,

    I recently had fitted a 2 inch set of Bilstein shocks and Dobinson coils. After driving for sometime my mechanic noticed that the inner edge of my tyres Cooper stt 245/75/16 , have started to heal and toe real bad, so it took it back to the blokes that fitted the suspension and they agreed that they were not good, mind you I thought that they were wearing great until now. They have now done 55k's and still have about 30% left.
    So they adjusted the alignment/camber not sure negative or positive, but they have set them a little different from recommended lr settings.
    They have also told me that I need to run them at 45 PSI.

    Anyone got any thoughts

    cheeers

    Bronson

  2. #2
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    The only alignment you can adjust on a D2 is Toe In or Out.

    Camber problem is either dead balljoints or bent housing full stop. Not adjustable.

    Castor cannot be adjusted without new bushes or serious mechanical mods.

    No way id run 45psi on my D2.
    High tyre pressures are a common ruse of poor tyre shops disguising their inadequacy or care to identify and rectify alignment issues by making the tyre so hard the contact patch becomes so small that the issue seems minimal or appears fixed.

  3. #3
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    Yeah I reckon around the 40psi mark is more on the money, then again I read by others that some do run coopers at 45Psi. was really happy with them until the lift was put on, can this change the tyre wear at all?
    As mentioned I cant remember if they adjusted positive or negative toe?? I have always rotated as advised at the shop, and tried to keep pressures at 40psi, although because it isnt my daily driver, I have to keep an eye on them.
    Im pretty keen to get the issue sorted before I go and replace with a new set, probably better to buy from the same shop that has been looking after them,although didnt fit them originally, so if they go to **** again, they will be totally responsible.

    Cheers
    bronson

  4. #4
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    I suspect they are advising the high pressures to relieve the tyre sides and possibly try to even out the tyre wear. I'm not sure this theory works on radial tyres too well to be honest. Never the less, 45psi wont be very nice. I'd be inclined to use another shop for another further work.
    Cheers
    Slunnie


    ~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~

  5. #5
    Join Date
    May 2011
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    Hi Bronson

    On the tyre pressures.
    A Cooper Tyre Rep. has told me that they have changed there standard inflation guide lines. 34 psi
    Example: 1
    If your car is used for city driving 1- 2 hrs on a warm day of 20 deg at 34 psi you will find heat in your tyres will increase the tyre pressure to
    approx. 40 - 44psi which would over inflate the tyre to wear the centre of the tread.
    But will increase tyre wear on the shoulders of the steer tyres at 44psi. especially if the steering geometry is not set right.

    Example: 2
    At highway driving conditions your tyres will generate more heat and pressure therefore your from 34 psi will increase to approx. 44 psi or greater.

    At 44 psi you would be getting good fuel stats and a hard ride.

    My Wife's D2 had Cooper ATRs 245/70/16 with 30 psi all the time. which were replaced 8 weeks ago after doing 80,000 k's

    Steve








    Quote Originally Posted by bronson View Post
    Hi Guys,

    I recently had fitted a 2 inch set of Bilstein shocks and Dobinson coils. After driving for sometime my mechanic noticed that the inner edge of my tyres Cooper stt 245/75/16 , have started to heal and toe real bad, so it took it back to the blokes that fitted the suspension and they agreed that they were not good, mind you I thought that they were wearing great until now. They have now done 55k's and still have about 30% left.
    So they adjusted the alignment/camber not sure negative or positive, but they have set them a little different from recommended lr settings.
    They have also told me that I need to run them at 45 PSI.

    Anyone got any thoughts

    cheeers

    Bronson

  6. #6
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    May 2011
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    Wyndham Vale. Vic.
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    Hi Bronson,
    1. How do they say to do there rotations ( what sequense)
    2. If tyres are heal & toeing it is either tie rod ends or your toe-in adjustment is out.
    Regards Shane

  7. #7
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    Hey luke, on a different note, are you busy on your side of town? Have a few jobs over there people are busting my nut to do, can I forward your details on! Interested?

  8. #8
    Join Date
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    Quote Originally Posted by Vern View Post
    Hey luke, on a different note, are you busy on your side of town? Have a few jobs over there people are busting my nut to do, can I forward your details on! Interested?
    G'day Damian,
    Been bit quiet of late, got a couple of builders keeping me busy, definitely mate, just give me a ring on the shoe phone 1st. Sorry haven't got yr number anymore

    Cheers
    Luke

  9. #9
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    melbourne
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    Rightio,
    Ive spoken with my landy mech at Romsey land Rover Vic, He has told me that I need to put in an adjustable panhard rod and have a look for a watts linkage suitable, which will in turn bring back the steering geometry back to normal.
    Has anyone got any info on this, and who is the best to buy from etc etc.

    cheers

    bronson

  10. #10
    Join Date
    Sep 2010
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    melton, vic
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    What are the specs of your disco when they done the wheel alignment I would not run the tyres any higer then 40psi on your 4wd post up specs so we can see the readings....

    Boof

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