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996 running 18" SportDesign and Pirelli PZero Rosso's - What pressures?

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Old 01-27-2004, 08:55 AM
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Beno
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Question 996 running 18" SportDesign and Pirelli PZero Rosso's - What pressures?

Hi All

I've read a lot about the need to keep a watch on the tyre pressures as the car can handle very differently due to minimal differences in tyre pressure.

What pressure F/R should I be running? I have searched the forum with little joy.

I do not have a GT3 but I do have the GT3 Aerokit and therefore the wheels - thought you may be the best people to ask.

Cheers

Beno
Old 01-27-2004, 06:45 PM
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Davidmichael
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Porsche recomends 36 lbs front, 44 lbs rear for 18" wheels. That's what I run on my 996 C4S.
Old 01-27-2004, 06:50 PM
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Eric - Plug Guy
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Watch your tire wear. After a thousand miles, see what's going on with the factory pressures. If you notice problems, you can drop a couple pounds too, and then see how they wear.

Also, if you have really bad roads or find the ride too harsh, you can probably drop pressures by 5% all the way around.
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Old 01-27-2004, 11:25 PM
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Davidmichael
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Thanks, will do
Old 01-28-2004, 02:06 AM
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BayArea Jimmy
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After some experimenting, I settled down on 35/39 on my C4S. Pilot Sport N1, Stock alignment/tires.
Old 01-28-2004, 05:47 AM
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Waz996
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36front/44rear.. gone +250km/hr for over 20minutes and reached 280+km/hr for a few minutes.. no problem!

Waz
Old 01-28-2004, 10:46 AM
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RJFabCab
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Default Factory recommendations are 36/44...

For 18" Rossos I have found that 32/39 f/r cold pressures end up at 36/44 after hot laps.
Old 01-28-2004, 01:28 PM
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TT Gasman
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Ambient pressures at 36/44 works pretty well on the street, or you can try the stock Gt3 specs (34/39). On the track I aim for 36/44 hot as well.



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