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-   -   Very weird tyre wear (http://www.cslregister.com/forum/showthread.php?t=4884)

DazBlackCSL 22-07-2010 05:39 PM

Very weird tyre wear
 
4 Attachment(s)
Just wanted opinions on this , running obviously the same camber both sides, but the drivers front has worn inside edge through to the wires :119:

Been running a set up Raeder in germany did on the monday AM when I was late arriving at Spa on our big trip a month or so ago , running a fair bit of camber -3 which is a bit too much for the road !!

Lazy so never change it :whistle: but still should be worn the same really I would of thought unless something is amiss :smt017

Car going down to a specialist next friday for a check up prior to Ring trip on Aug 6th, so just thought id see if anyone had any ideas ;)

Only noticed by a mate as I was pulling out on full lock !!!

thegingerninja 22-07-2010 05:46 PM

Too much toe-out? ....but the camber is probably the main reason.

mattCSLnut 22-07-2010 05:52 PM

Quote:

Originally Posted by DazBlackCSL (Post 61196)
Just wanted opinions on this , running obviously the same camber both sides, but the drivers front has worn inside edge through to the wires :119:

Been running a set up Raeder in germany did on the monday AM when I was late arriving at Spa on our big trip a month or so ago , running a fair bit of camber -3 which is a bit too much for the road !!

Lazy so never change it :whistle: but still should be worn the same really I would of thought unless something is amiss :smt017

Car going down to a specialist next friday for a check up prior to Ring trip on Aug 6th, so just thought id see if anyone had any ideas ;)

Only noticed by a mate as I was pulling out on full lock !!!


WOW !!! that is very unusual and what a waste of a decent CUP :bigcry: but IMHO I think it looks like your tyre has been rubbing on something rather then road wear ???
Have a look under the wheel arch to see rubber deposits on suspension components etc as a first port of call. ;)

s.mac 22-07-2010 05:53 PM

lucky you spotted it mate :shock:

DazBlackCSL 22-07-2010 06:05 PM

Quote:

Originally Posted by s.mac (Post 61203)
lucky you spotted it mate :shock:

I know !!! Blasting along and bang ...

TANKSLAPPER 22-07-2010 06:44 PM

Here's my pennies worth

TOO MUCH CAMBER & /OR TO SOFT ON BUMP

The main part of this wear is caused by heavy braking. the front suspension flexes under load, the distance between the top mount to the centre of the wheel decreases as the spring is compressed. so you were probably getting -5 camber under braking and thus at the same time only the inside of the tyre was touching the tarmac, which in turn heats the inside of the tyre up which increases the wear

I would try 2.5 camber and stiffer bumper and rebound settings :thumbs:

DazBlackCSL 22-07-2010 07:07 PM

Quote:

Originally Posted by TANKSLAPPER (Post 61207)
Here's my pennies worth

TOO MUCH CAMBER & /OR TO SOFT ON BUMP

The main part of this wear is caused by heavy braking. the front suspension flexes under load, the distance between the top mount to the centre of the wheel decreases as the spring is compressed. so you were probably getting -5 camber under braking and thus at the same time only the inside of the tyre was touching the tarmac, which in turn heats the inside of the tyre up which increases the wear

I would try 2.5 camber and stiffer bumper and rebound settings :thumbs:

coolio will have a play with it when it's up there !! :thumbs:

glendog74 22-07-2010 07:50 PM

From the pics, it looks like that tyre is not far from being worn anyway?

shane@mbtech 22-07-2010 08:10 PM

Looks definitely like toe to me.

What camber and toe setting did they dial in?

NZ_M3 24-07-2010 11:35 AM

Doesn't look like a toe issue to me actually as the tread blocks are all still relatively flat - i.e. no tell tale toe wear where the blocks rise on one end vs the other.

I agree with TANKSLAPPER'S assessment - Camber + lower compression (or front springs too soft).

Might want to check your front control arm bushings as if those are worn you'd be going to excessive toe out under braking, accelerating inner wear.


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