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Kirkham Motorsports

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Old 07-30-2011, 11:09 AM
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Default Which tire pressure with Avon tires ?

Hi guys, anyone of you runnin Avon CR6ZZ tires on his cobra ?
Which tire pressure are you running ?
Thanks, Stephan
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Old 07-30-2011, 12:34 PM
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I moved mine from 21 to 24 a few months ago and that seems better for my patterns and usage. Since the rears have a larger contact patch I thought they might work best down a pound of two but that has not been the case. This is what I use on the street. Twisty back roads.

Edit: I see that you are Germany. I lived west of you in the Rheinlandpfalz for many years. Were I there today I would likely raise my pressures by 2-3 psi.

Last edited by Chilibit; 07-30-2011 at 02:16 PM..
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Old 07-30-2011, 02:07 PM
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27 all around.
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Old 07-30-2011, 09:54 PM
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26 for me on all 4
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Old 07-30-2011, 09:59 PM
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24 front 22 rear, ride nice don't they?
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Old 07-31-2011, 12:24 AM
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Saw the thread, I have Avons and love them I am at 25 and 22 rear. Any more and the ride becomes a little rough. Less and the car becomes stiff to turn at low speeds. I have the Subaru rack and it is very sensitive. Great on the highway. Question how is the best way to determine Tire pressure per application, with an infared gun?? I am sure there is a Stock Car/ Grassroots article on this but I have not searched.
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Old 07-31-2011, 07:11 AM
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Lay some rubber and see if the marks match the tread width. It's more fun than using the infra red to shoot even tire temps across the tread.
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Old 07-31-2011, 10:15 AM
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Mickmate ... I`m going to be a smart a$$ here ..... hoiw do you lay rubber with the front wheels ? All wheel drive ?
Seriously , your way works as we used to do that to set tire pressures for drag strip use .
I`ve got the Avons and on the street 26 F and 25 R ... at the track I have to bump them up a pound or two .
A lot depends on how the suspension is set ... i.e , how much negative camber front and rear , toe out , wheel weights , caster etc .
An infra red gun isn`t as much fun as your way , but , with the German police , probably a lot safer !
Roger Krause also has some good tips on his website as to how changing tire pressures can affect a cars`s handling .
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