And the louder explosion when they blow up. :icon18:

I have the sport model with the 19" Rays forged aluminum wheels and shod with Bridgestone Potenza S-007 245 on the front and 275 in the rear. The dealer sold the car to me with 28 psi in all tires, which I promptly pumped up to Nissan's recommended 32 psi. The maximum recommended inflation pressure on the sidewall is 51 psi, so I split the difference and now am running 40 psi in all tires. The ride is not noticeably harsher but it does seem to be a little more precise and responsive in the feel. I'm going to get a tire tread depth gauge and monitor the wear across the tread. My goal will be to equalize the tread wear across the tire.

Not sure why, but I feel almost 9 years younger.

All stock, 19-inch set-up, and I've always been a fan of 35psi. To me, it a nice balance between ride quality, wear and MPG.

I've used this pressure in every vehicle I've owned since I started driving in 1973!

:facepalm:

Don't run 40 PSI in your tires :shakes head: 32-35 PSI is plenty for daily driving.

Also, the suspension geometry of the Z will never give you even wear across the tires on a daily driver.

Try
32 Rear, 35 Front

If you autox or track it try
35 Rear, 38 Front and let some air out between sessions as they get hot and the pressure goes up.

I think for tracking or auto-x, it would depend on the tire, air temps and other factors. At one event this year, I had to air-down to the upper 20's to get full contact with the track.