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The large dark patches are just an imprint from the trailer.

What graining is as far i am have been told is the large lines where the outer layer of rubber has become to hot and pushed into these small windrow like pattern. I can only assume that the tyre has got too hot for this to happen, should be a nice smooth ripple pattern i am told. If that is the case and i am hoping that some one can confirm this as i am not familar with these tyres then i will need to reduce the grip level to advoid the problem....i think :-)

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i have set the camber to 1.5 deg on the rear so i would expect some wear on the inside of the tyres. I run more 5 deg camber on the front and i dont seem to have the same wear pattern on those tyres, they are a nice smooth ripple pattern. Then again they are only seeing a small percentage of the drive compared to the rears.

Might try and run a bit less than the 28psi cold i currently run might give 26psi in the rears try next time out, see if that helps.

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re pressures....if it gets better after more laps drop the cold pressure, opposite if it drops off after a few laps. I'ev never used slicks so I can't comment on the wear (doesn't look too bad to me)....except that you aren't using the whole tyre / not enough camber. But I guess you may haev done that deliberately to keep rear grip.

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Ducan,

not the best pic as the dust here in the dessert is just never ending! But it is using the whole tyre its just that only 3/4 looks like it due to the car being parked and driven in a straight line picking up dust on the inner 3/4 of tyre due to camber. I start to get under steer after about 15 minutes on track so i figure it must be to much grip in the rear and that is generating either heat which is causing the strange wear pattern or the tyre is what i think is graining, but i could be wrong hence why i am asking.

Edited by tacker
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could be i guess but it feels more like a push from the rear rather than the front losing traction. Car gets a little hoppy if you know what i mean. not sure if that to much rear grip or just losing front due to to much camber

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