tire pressure question

[2fkn40]

i got some 205/45/r17 tires on my s13..jus bought the rims from a guy..how much air should be in there? the tires have a 51 max psi..so maybe 40 psi? thanks guys

[stillmatic]

Your tires should be fine at 40-44psi. I have 205/40/17 and I keep the pressure at least at 40psi. Max rating is 44psi. My tires were actually underinflated at 33-34psi for a couple of months, and I noticed the spikes started to fade away with only 2,700 miles on them.

This might help if you're not sure what pressure to set your tires to. For stock wheel/tire setup:

Curb weight + plus daily driver divided by 100, plus 4 if the car is heavy

Example:
S13b FB SE curb weight = 2747lbs + daily driver = 150lbs
Divided by 100 = 28.97
Tire pressure = 28 or 29psi +4 if car is heavy