15" A032R tire pressures

don911 · don911's Garage

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 · cstreit's Garage

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 · don911's Garage

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 · SteveF_911's Garage

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 · cstreit's Garage

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...