I have an '04 RX-8 with a 6 speed, 225/45/18 tires. For everyday driving, what PSI do you keep your tires inflated to? The owner's manual says 32.

Your thoughts?

 

i do 32

 

always use the pressure the owners manual tells you. it does not matter what tire size you have.

 

32 is good for daily driving. that's what i use and i have aftermarket wheels and tires.

 

I keep mine at 32 as well, well I try the 2 nails make that a bit more difficult.

 

depends on what you want to do/how you want the car to behave.

but for DD go with the 32 as stated

 

32 on a cool day otherwise you'll be greeted with a buzzer and TPMS light one cold morning... just happened to me the other day.

 

my one is at 28 do you think that is too low ?

 

Yep, I just cold inflation plussed mine up a bit in our now cooler weather. 32 psi for daily driver.

Higher than recommended air pressure gives a bit better gas mileage, but promotes uneven center-tread wear. Dangerous if very high - blowouts.

Lower then recommended promotes uneven edge-tread wear and is dangerous (potential tire unseating if very low).

28 psi is a bit low.

Remember to always check air pressure when tires are relatively cold (not run for a few hours) and in the ambient driving environment.