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Track tyre questions...

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Tue Sep 15, 2015 9:10 am PostPost subject:
AK
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Hamish Smart, Rory Butcher, Steve Burns, Jonny Adam etc

Give KH a call to discuss
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Tue Sep 15, 2015 11:16 am PostPost subject:
andybell
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not sure if it works in other cars but I actually run 3 different pressures at knockhill. if you were looking at car from above its for the proper way doing right handers

front
19 20
18 19
back


now i realise these pressures are low but (may/could) be an idea to look at that.
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Tue Sep 15, 2015 1:13 pm PostPost subject:
tastyturbo
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hmmm - interesting
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Tue Sep 15, 2015 1:29 pm PostPost subject:
chorlton
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In the Clio on federal 595r (I think it was) I was 24 front & 25 rear but just stop & check every few laps & keep the hot temp at no more than 30
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Tue Sep 15, 2015 1:31 pm PostPost subject:
tastyturbo
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I was running used yoko's and had them at 30 (as per previous suggestions)
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Tue Sep 15, 2015 1:33 pm PostPost subject:
chorlton
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Front castor will help massively on the outside front
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Tue Sep 15, 2015 1:41 pm PostPost subject:
HummuH
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On a std powered Clio, I'd expect 4 to 6 psi rise on the front, 2 to 3 psi on rear. 1 to 2 psi left to right for normal direction at Knockhill.

I'd start at FL: 24 FR: 26 RL: 27 RR: 28 and adjust accordingly after 5 or 6 laps to hit 30 hot all round. It will vary depending on what tyre you use. When you've done that, adjust front/rear by same across axle to adjust balance and don't be afraid to go bonkers high on the rear if you want sharper turn-in/less understeer.
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Wed Sep 16, 2015 5:06 pm PostPost subject:
Gord
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HummuH wrote:

I'd start at FL: 24 FR: 26 RL: 27 RR: 28.


That's what I felt was the best set up for my Peugeot, but that weighed 860kg, Clio is a good bit heavier than that, though.
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