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Author Topic: Severe uneaven tyre wear  (Read 1745 times)

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TheBoy

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Re: Severe uneaven tyre wear
« Reply #15 on: 15 July 2008, 22:00:21 »

Quote
Quote
On the front tyres the inner are down to the nylon, the outsides have very good tread. What should be considered in trying to minimise this as I am replacing all four this week.
Thanks
 :y
Just posted here:
http://www.omegaowners.com/forum/YaBB.pl?num=1215732950
on my experience but I will repeat it here.

This tyre wear pattern is not cosistent across the thread. Only the inner 20mm or so gets badly worn while the rest is evenly worn. I don't think it is camber or tracking because the effects of these are usually proportional across the whole tread.

In my case, the front wishbone bushes were badly worn, causing severe toe out under breaking - hence the wear pattern. At rest, on the ramps, the tracking and camber were checked and were in spec. Fitting new ones was not a painless task but worth doing for the new tyres.
I will post up pictures of my fronts - MV6 has camber issues currently...
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feeutfo

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Re: Severe uneaven tyre wear
« Reply #16 on: 15 July 2008, 22:17:14 »

Quote
Quote
On the front tyres the inner are down to the nylon, the outsides have very good tread. What should be considered in trying to minimise this as I am replacing all four this week.
Thanks
 :y
Just posted here:
http://www.omegaowners.com/forum/YaBB.pl?num=1215732950
on my experience but I will repeat it here.

This tyre wear pattern is not cosistent across the thread. Only the inner 20mm or so gets badly worn while the rest is evenly worn. I don't think it is camber or tracking because the effects of these are usually proportional across the whole tread.

In my case, the front wishbone bushes were badly worn, causing severe toe out under breaking - hence the wear pattern. At rest, on the ramps, the tracking and camber were checked and were in spec. Fitting new ones was not a painless task but worth doing for the new tyres.

The "spec" is so wide, its almost useless. Maybe some arse covering going on from the fitter perhaps? Worth a trip to wim for a demo?
For me the tyre has to be at an angle to wear
on one side. If it was just toe and the tyre was flat to the ground it would wear evenly but more quickley... ?? As i understand it.
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davlad22

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Re: Severe uneaven tyre wear
« Reply #17 on: 16 July 2008, 02:00:08 »

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hi nursey. a little test for you if you fancy. Got this with help of Rob at the Reading meat. With the car parked up, put your foot on the top of the wheel under the wheel arch about 10/11 o'clock and stand by the bumper with the other foot, now push the wheel back to the rear of the car while looking at the centre of the wheel, if it even so much as smells like any movement or play, then i think you may well need  new wishbones, do both front wheels in both directions. Or wim will diagnose no doubt but if they say they are buggerd i guess that means a return visit? Will wim fit them for you if you need them and you have some with you, or does this just complicate things. Food for thought. ;)

not sure about that mate!?! you'll have to elaborate! If you've got the handbrake on it won't move anywhere!?!

Just get it set up properly  :y
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Marks DTM Calib

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Re: Severe uneaven tyre wear
« Reply #18 on: 16 July 2008, 08:20:53 »

Quote
Quote
Quote
On the front tyres the inner are down to the nylon, the outsides have very good tread. What should be considered in trying to minimise this as I am replacing all four this week.
Thanks
 :y
Just posted here:
http://www.omegaowners.com/forum/YaBB.pl?num=1215732950
on my experience but I will repeat it here.

This tyre wear pattern is not cosistent across the thread. Only the inner 20mm or so gets badly worn while the rest is evenly worn. I don't think it is camber or tracking because the effects of these are usually proportional across the whole tread.

In my case, the front wishbone bushes were badly worn, causing severe toe out under breaking - hence the wear pattern. At rest, on the ramps, the tracking and camber were checked and were in spec. Fitting new ones was not a painless task but worth doing for the new tyres.

The "spec" is so wide, its almost useless. Maybe some arse covering going on from the fitter perhaps? Worth a trip to wim for a demo?
For me the tyre has to be at an angle to wear
on one side. If it was just toe and the tyre was flat to the ground it would wear evenly but more quickley... ?? As i understand it.

You understand correctly  :y

For info, the factory camber setting was -1 deg 40 (this shows up as ideal point on the likes of the Hunter geometry setup machines), I think WIM set to about -1 deg 20. Mine are currently set to -1 deg 30.
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