One for You Knowledgeable Funsters...

Discussion in 'Tech/Mech General' started by JJ, Aug 22, 2010.

  1. JJ

    JJ Funster

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    Here is a mystery (to me and to the tyre lads.)

    One (or more) of you Funster will know...

    Bought four new tyres eight months ago. These went onto the rear wheels (twin rear wheeled)

    Problem yesterday so took the Wagon back to the tyre people.

    One side was ok, the other side had a worn tyre and this one...

    Given that both tyres revolve around together how did one sustain this wear when its "neighbour" didn't... (see photos of the strangely worn one)

    Thanks in advance...

    JJ

    Just to clarify... the photos are of the same tyre...
     

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  2. chatter

    chatter Read Only Funster

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    wow jj you were lucky, thats down to the core material they mold the rubber to, You sure someone hasnt done some tyre swopping when the wagon has been parked up.
     
  3. acting_strange

    acting_strange

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    For a start its in one place on the tyre so there was a balance problem...

    Can you send me the photo's in a bigger size so that i can see the damage better?

    It looks like it has also worn on the inner/outer edge? which would imply a camber problem as it shouldn't be a toe in/toe out issue although depending on how the axle is mounted of course it could be.
     
  4. Janine

    Janine Funster Life Member

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    Are you sure the tyre's been going round, JJ? :Eeek:
     
  5. scotjimland

    scotjimland Funster Life Member

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    wow .. that is bad .. what did the tyre guys say ?

    perhaps due to a combination of under inflation and brake binding .. ?

    or you were practising doughnuts ..:Laughing:
     
  6. Terry

    Terry Funster

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    Hi JJ what mileage have you done to wear the tyre / s so much ?
    only thing I can think of is one of the twin tyres was / is under inflated - only wearing the photo one- plus you have made a big emergency stop :Eeek: or the break has stuck on then released itself when the other tyre has touched the ground if you get my drift :Rofl1::thumb:
    terry
     
  7. Terry

    Terry Funster

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    Snap :thumb: it took me longer to type :Rofl1::thumb:
    terry
     
  8. JJ

    JJ Funster

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    Thanks everyone... I think Terry and Jim might have cracked it... I guess if the outer tyre was under inflated and the hand brake was sticking this could happen... (the worn one was on the inside...)

    I can say definitely that there have been no emergency stops since the tyres were fitted...

    Luckily John (of Champers) will be able to sort it (I'm sure) as the Wagon is booked into his garage tomorrow...

    JJ

    (Acting strange... I am afraid I only take low res photos so I can post them easily...)
     
  9. acting_strange

    acting_strange

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    OK ....under inflation would cause both edges of the tyre to wear and a sticking brake would cause both tyres to wear.
     
  10. JJ

    JJ Funster

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    I was thinking that if the outer tyre was under inflated then the inner tyre would be taking more of the "strain" and if the h/brake was sticking in one place on the rotation then the inner tyre might wear like this... how else could there be this wear on only one of the tyres... as I said... a mystery to me (and the tyre people who just said "something sticking mate"...)

    Just thought that maybe the tyre was faulty from the off???

    JJ
     
  11. scotjimland

    scotjimland Funster Life Member

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    I would rule out a faulty tyre JJ,

    yes, you do get them but they will either blow out, de tread or delaminate .

    I still think it's brakes and wrong or unequal tyre inflation
     
  12. Terry

    Terry Funster

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    I assume that these are not the drive wheels :thumb: ie they are getting pulled rather than pushing.One tyre is half inflated while the other is fully up,taking all the weight.The brake sticks/ gets left on but the other side is in effective/ possibly on a cambered road hence the wear only in one place on the tyre and not all way across :thumb: After that either the brake un-sticks or hand brake is released :Doh: LOOKING at pics, Still like to know what mileage was done to wear out tyres that quickly :Rofl1:
    terry
    Edit - Jim is thinking along the same lines
     
  13. JJ

    JJ Funster

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    Hi Terry, these are the drive wheels... (Iveco 35-12 Turbo Daily)

    Don't know exact mileage (Portugal and back and to several shows and up and down to the Stadium of the Enlightened Ones a few times) but the pair of tyres (fitted at the same time) on the other side have not worn nearly as much...)

    JJ
     
  14. Terry

    Terry Funster

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    Hi JJ that blows my handbrake idea :Rofl1: only leaves a faulty tyre :BigGrin:
    Are both tyres the same size
    terry
    sure you have not been doing H/B turns
     
  15. Terry

    Terry Funster

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    Half house brick stuck in between back wheels ? :Eeek:
    terry
     
  16. Taran_Las

    Taran_Las Funster

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    Once John has fixed it and inflated them with good Welsh air they should be fine JJ :thumb:

    Phil
     
  17. dave4samson

    dave4samson Read Only Funster

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    hi there i personally think its looks tyre casing distortion probably caused by a cut in the tread allowing ingress of moisture to cause ply deformation , i know you cant look for cuts as tread gone but possible small hole inside so no claim from tyre dealer !! cheers dave
     
  18. Snowbird

    Snowbird Funster Life Member

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    Hi JJ,if one of the casings was distorted from new...which hapens,it will wear both tyres on the same hub.
    Only needs a small bulge to wear the tyres away in no time,especialy tearing up from Porkyland.
     
  19. Road Runner

    Road Runner Read Only Funster

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    Now I think it's JJ doing handbrake turns.

    Anyone seen him flashing around on his bikes with the odd skid here and there.

    Seriously the JJ your real lucky no disasters happened with them mate.

    We wouldn't wanna lose you mate :hug:
     
  20. Landy lover

    Landy lover Funster

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    JJ I have seen this type of wear before - 2 things you need to get checked before you put new tyres on the road.. The vehicle you have is a dually or dual rear wheel - Bearings - worn bearings will create a bad wear pattern but I would have thought you would have heard them rumbling unless you have the radio on all the time - the other consideration is the stub axle being bent out of line - this can easily happen if you hit a kerb hard even going hard into a pothole can be the cause and there are no obvious outward signs and the 'bend' may only be a few thousandths of an inch - a good engineer would be able to check these for you. One thing I can guarentee is that if you dont sort the problem the new tyres will go the same way - the tyre wear is the result of the problem not the cause.
     
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