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-   -   15" A032R tire pressures (http://forums.pelicanparts.com/porsche-911-technical-forum/103689-15-a032r-tire-pressures.html)

don911 03-25-2003 11:26 AM

15" A032R tire pressures
 
First DE event coming up this weekend. It will be my first time with 15" A032R tires.
Anyone care to share their pressures for these tires?

Jack Olsen 03-25-2003 11:47 AM

I'll quote the fast guy on the board:
Quote:

Originally posted by Randy Wells
For AO32Rs and the track on a 911, start at 23 front and 25 rear. Bleed when hot to 25 front and 29 rear. I know this seems low, but it works - these tires will get greasy when pressures rise above 30psi.

Dantilla 03-25-2003 03:10 PM

What about Hoosiers?

dad911 03-25-2003 03:39 PM

I have found Hoosiers like 41 lbs hot. Start at 35, get them hot, pull in pit & bleed down to 41. If you start at 35, and can't get to 41, drive harder.

cstreit 03-25-2003 03:45 PM

Hoosiers are slightly dependant on car weight. For a lightweight car I would actually end up at 38-39 hot (front and rear). Keep in mind that if they hit 43-44 traction will dissapear at an exponential rate for every pound thereafter.

PCA7GGR 03-25-2003 05:13 PM

I run Yoko 032s and concur with Jack's recommendation.

don911 03-25-2003 05:17 PM

Thanks for the replies! Hopefully the A032s will be in tomorrow. I also have a set of hoosiers that came with the wheels so now I set for those tires as well.:)

SteveF_911 03-25-2003 06:20 PM

On the Track I run 32PSI cold on the back tires and 28PSI cold on the front.

After the first run I check how much of the tread show wear and adjust it up or down.

A lot depends on track temperature and track type.

cstreit 03-25-2003 06:57 PM

THe low tech mthod is the chalk test.

Draw a line of chalk across the tire to the sidewalls. If it'd worn more at the edges, increase pressure 2 psi, if worn more at the center, decrease 2 psi. Make pressure changes 2 psi at a time (according the old p-car guy that got me started).

...or go the hi-tech method and buy a tire temp guage...


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