displaying posts 1 to 21 of 21

Author Subject: Strange tyre wear
honestly3k

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Post #1
Hey guys,

This is the front drivers side wheel.
Shock






Notice the balding on the outside of the tyre...seems pretty horrific to me...what worries me is that its done this to two tyres in the space of about 4-5 weeks.

Both tyres werent new but had about 3-4mm of tread each.

There has been a rattling under the drivers side since ive had the car.
It had new wishbones just before i bought it but the chap who owned it had it so low it was crashy so i raised it on new bilstein + eibach springs. Along with new top mounts and droplinks.

Some of you may remember that my wishbone bolt came loose over time quite recently and i lucky spotted it in time or it could have been very nasty. That was the second time that bolt has come loose.

My question is, is there anyway the previous suspension setup could have knackered my drivers wishbone? It is very rattley down there at the moment.

When i first fitted the new springs etc it felt very tight at the front and refined.

NOW....it just feels very sloppy and loose. And it almost rides unevenly.

I have new lemforder track rod ends and balljoints to be fitted. Going to try and do that this weekend then get it 4-wheel aligned.

The front passenger side seems fine, tyre wear seems alot more even and its not rattley or crashy that side.

Does anyone know what could be going on?

Oh and a related question, i was told that my w-reg p3 needed 16mm ball joints by eurocarparts - does that seem right as i was reading later models had 18mm ball joints? Or is it a case of geting down there and checking first hand?

Thanks for any input! Unsure

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Posted 10th Mar 2011 at 00:35
fozzy_255

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Post #2
under inflated tyres? Trackings out
Posted 10th Mar 2011 at 00:39
hovis16

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Post #3
p bush ? incorrect tyre pressure? dunno haha

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Posted 10th Mar 2011 at 00:40
owain

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Post #4
If you jack it up is there any play in the wheel, ie does it wobble about if you shake it?

If not then it could be scrubbing because of excessive toe or maybe low tyre pressure.

Are the pressures correct?

If so, I'd take it to a garage to get the tracking checked (most places will do a free check) so you can see if that's the problem.

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Posted 10th Mar 2011 at 00:41
lotek

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Post #5
over inflated tyre and extreme TOE IN Yes

wheel bearing may be fooked also
Posted 10th Mar 2011 at 00:42
honestly3k

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Post #6
Thanks all Smile

I check tyre pressures regularly and pump them upto 34/35 psi...is that ok?

There is definately something going on down there as to account for the rattling / creaking.

I was going to check for play in the wheel this weekend when i get a chance to get it jacked up.
Dont get much chance during the week.

I only havent taken it to be tracked yet as i have new parts to fit and there isnt much point as it would need to be tracked again after they are fitted.

Is the p-bush inside the wishbone joint? Where that large bolt goes into? And if so, would a fubar'd p-bush cause the bolt to not stay in?

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Posted 10th Mar 2011 at 00:46
lotek

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Post #7
reading it again, you changed ride hight so tracking is 100 percent out.

tyre is also over inflated, as you found someone to fit part worns no doubt they are dodgy or mates LOL
they seated rim at 40 plus psi and diddnt let tyre down after.

ball joint lenght will cause simular issues, they may have supplied non PAS ones
Posted 10th Mar 2011 at 00:46
honestly3k

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Post #8
I have 4 spare cyclones in the garage with tyres so thats where ive been getting the part worns from LOL

Is 35 psi too much for a 55 profile?

I had a quick look at the balljoint today and it looks ok..

For some reason i think something is up with the wishbone...thing hasnt been right since i had the car! Sad

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Posted 10th Mar 2011 at 00:48
lotek

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Post #9
35 psi is fine but it was probably alot more when first fitted.

wishbone could indeed be bent.. may have hit a kurb at speed.
tracking is first port of call tho
Posted 10th Mar 2011 at 00:52
honestly3k

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Post #10
Thanks!

Did anything i say about the p-bush ring true or am i talking garbage?!

Oh and what balljoint size should i be looking at? Got a nasty feeling 16mm is wrong for my p3. :S

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Posted 10th Mar 2011 at 00:59
tvrfan007

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Post #11
Lotek, tyre is UNDER inflated. Overinflated would wear out the centre as a band as the tyre would balloon.

36psi all round is the standard tyre pressure and works fine on my HDi.

I'd say that you have some extreme toe and you've got too little pressure in the tyres. Slow punctures wear out tyres rapidly. I'd get that wishbone changed out to be safe.

AFAIK all phase 3 are 18mm ball joints.

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Posted 10th Mar 2011 at 01:12
adam b

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Post #12
Could also be the wrong length ball joint, giving you the toe issue.

You might well need replacement hubs if its been using 16mm balljoints. The holes probably aren't round any more.

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Posted 10th Mar 2011 at 01:16
james_gti6

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Post #13

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Posted 10th Mar 2011 at 01:36
honestly3k

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Post #14
Im thinking of getting it for a pre-mot MOT and have them look at the whole car with focus on the suspension.

Would give me the best idea of what i need sorting by May.

When you refer to length of balljoint is that the 16mm/18mm arguement or is it seperate?

Looking at the balljoint when i measure the single pin on the bush its 16mm so thats what i thought the size referred to.

Thought 16mm wouldnt fit on an 18mm hub? Shut up

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Posted 10th Mar 2011 at 01:39
adam b

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Post #15
Yes it will fit but badly.

No you can also get non-PAS ones which are a different length from balljoint to the 3x bolts on to the wishbone.

16 or 18mm refers to the diameter of the balljoint to hub spline.

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Posted 10th Mar 2011 at 01:52
Rich E Forum Admin

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Post #16
This is definitely a geometry issue not a tyre pressure problem.

Get it into a tyre place that can do a complete geometry check for you. It looks like a combination of toe and camber.

You should have 18mm ball joints on the car as said.

Having the wrong PAS / non-PAS ball joint would be obvious as the wheel would noticeably lean inwards (top to bottom).

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Posted 10th Mar 2011 at 02:06
honestly3k

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Post #17
Thanks for all the helpful swift replies!

Agree with you there Rich. Has to be something structural / geometry thats causing it. It isnt knocking for nothing me thinks!

So ECP have supplied the wrong size balljoints...guess i will have to exchange them.

Is it obvious if i take the wheel off to just double check the size of the ball joints fitted to the ones ive got supplied? Just to be sure i havent got the right ones!

Wheel looks fine when stood next to it so dont think ball joint length is an issue.

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''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?
Posted 10th Mar 2011 at 02:12
honestly3k

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Post #18
Oh and my query about p-bushes? Do these sit in the wishbone that the big joiner bolt sits into (the one that keeps coming out on mine)?

And will a knackered p-bush cause the bolt to be loose?

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''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?
Posted 10th Mar 2011 at 02:13
adam b

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Post #19
A bent subframe could cause all of this. Get the balljoints changed then get it on an alignment machine.

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Posted 10th Mar 2011 at 02:47
owain

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Post #20
honestly3k wrote:
Oh and my query about p-bushes? Do these sit in the wishbone that the big joiner bolt sits into?


That bolt just goes through a standard bushing and into a threaded lump of steel.

The p-bushes are on one of the other ends of the wishbone further back, and are clamped on with the ARB.

Look for where the ARB meets wishbone, that's your p-bush Yes

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Posted 10th Mar 2011 at 02:58
cress87

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Post #21
I was supplied with some incorrect wishbone ball joints. The shank diameter was correct (18mm) but the distance between the joint and the mounting holes was too short. The result was massive positive camber and a few degrees toe in. Once fitted, it was immediately obvious there was a problem but if left they would have destroyed the front tyres in no time.

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Posted 10th Mar 2011 at 02:59

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