tire pressures for 205/50 and 255/35/17?

[bento]

i have 17 x 7.5 and 9 fikses w/ some s-02 pps and i was wondering what the best tire pressure to run them at on my 88 carrera would be for street use.
i play the shoe polish game when i auto-x, but i don't really have a street pressure and i have heard a lot of conflicting advice.

all help is, as always, appreciated.

david benett

[Roland Kunz]

Hello

The air pressure is mainly relatet to the car and therefor is similat for all tiresizes. However some tires are different ( depending on Plyload & topspeedrating ) and the best is to ask the tire manufactorer or an expert.

A "good" tirepressure for the 3,2 is 2,2 atü front and 2,6 atü rear.
( Open enginelid and look at tire pressure sticker from factory )

Grüsse

[chuckr]

Different brands require different pressures.For example I had BF Goodrich CompTA VR4's 205/225's that did very well with 28lbs front and 32 rear.I got new BridgestoneRE730's same size 205/225 16 and since the28/32 worked so well I ran that in the 730's.My front tires wore out at 18,000 ! ouch ! after some research and some trial and error I now run 34lbs front and 36 rear, much better ! Your SO2's should come in around the 32-34 front and 36-38 rear but this is just a starting point, you may find that going a bit lower like 32/34 will suit your driving style better so just write down your numbers and find a good road and see what works best for you