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Registered
Join Date: Sep 2008
Posts: 2
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Need Help Tire Pressure
I have a 1991 C4 running 17" Cup wheels. I have 225 45's in the front and 255 40's in the rear. I have just put on a set of Falken 452's and at lower speeds up to 120KM/H they feel great but beyond they get a little loose.
I know that they need more run in time but I am curious about the proper front and rear pressures with these tire sizes. Any help would be appreciated. 
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09-21-2008, 08:15 AM
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P-Zero Burner
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What pressures are you running now?
The Porsche recommended tire pressure for 17" wheels is 36 psi front and rear.
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Stephen 2006 997 Carrera S - Sport Chrono, Full Leather 1968 912 - Purchased from Vasek Polak in 1971 and still in the family ----- 1989 Carrera 4 - Andial service history, Sold and missing it |
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09-21-2008, 08:29 AM
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Registered
Join Date: Sep 2008
Posts: 2
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Hi
I just had new tires installed and I told them 36 and 42 and the car was handling very bad at speeds over 130kmh. I checked the pressure myself and I found 42 in the back but only 30 in the fronts. The car feels much better with 36 in the front but I will try 36 all around. My car is bone stock with 82,000km - Slate Grey with magenta interior. |
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09-23-2008, 07:03 AM
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Silver Bullet
Red 64
Blue Mood 912
