bigwasum

iTrader: (2)

37 psi on 225 245/35/20

werewolf

38 on 225/45 17s

Mike813

iTrader: (5)

36psi on 18's nyc roads.

denut-L

iTrader: (11)

35psi is where i'm at

sakataj

iTrader: (182)

allegedly nitrogen doesn't fluctuate with the temp like normal air does....

in the summer the air in the tires will expand with the heat and "decrease" with the cold from the winter.nitrogen is supposed to not fluctuate with that temp so keeping the pressure more consistent

Sixdown

I always use between 35 and 40 in all my cars. Anything higher and I found the tires wear out in the center of the tread. Anything lower and I get worse fuel mileage and wear. I rarely notice much of a fluctuation in Psi in differing weather.

GS4_Fiend

iTrader: (22)

The fluctuation is much noticeable during cold season. You will lose about 3psi or less.

kamlung

iTrader: (8)

35-40psi for me...

StockGS400

245/40/18 & 295/35/18 @ 36 psi

DMPesso

So will higher psi give a softer ride or lower psi give a softer ride cuz mechanics out here in NYC always set it to 32, I feel like thats too low maybe.

StockGS400

32 psi is fine for stock. . . but yes a higher air pressure will make it ride a little harder but in the end it depends how sensitive you are