I was reading the manual and the side of the drivers door panel and was stating that the 18 inch tire should be inflated to to 38 pds. I checked my tires and they only had 32 pds. Filled them up to 38 and now the ride really is very harsh. For measuring purposes I waited till the tires were cold before taking readings and filling up with air. The 32 pds seems to be the better pressure, what do you folks think. Thanks!

 

I also found 38 a little harsh (with JCW suspension). I typically had 35-36psi and got 28K miles out of the set; much longer than most owners report. Rotated every 3K miles and wear was even to the day I chenged tires.

 

is 29 psi to little for a set of 17??

 

lower tire pressure is definitely going to have a softer ride. With a 18 inch wheel, you probably want to run a higher pressure because your side profile is so low you dont want to damage your rim if you go over a bump.

 

38 is too hard if you ask me. Once the tire heats up it will be probably close to 44.

35 should much better although on my current car with 17's I run 32.