Just finished scanning thru the 4th gen faq and found that 31 psi is for front and 29 is for rear, stock 16" tires.

I have the 2k Maxima 17" wheels with Falken Ziex S/TZ01 (factory issue for the 2k Max's). Will the 31/29 psi still apply or is the recommended tire pressure different? I looked on the side wall and it says 51psi! It seems a little too much. I'm about to take a road trip to Vegas and I wanted to make sure the tire pressure is correct for fuel economy reasons.

 

Tire sidewall rating is a MAXIMUM allowable pressure. Tires are designed to run with a certain amount of deflection in the sidewalls and tread - too little, there is a problem, too much, there is a problem. This deflection depends on two things: vehicle weight and tire pressure. So naturally, the pressure is adjusted to match vehicle weight.

The rating to use is the one on the car. I run 32 in front, 30 in back, or something similar. If the car is heavily loaded, I recommend putting in another 5psi all around. For highway driving without many bumps, that extra 5 psi may help fuel economy. But 50psi is out of the question.

Dave

 

Thanks for responding so early in the morning. I'll be travelling up the interstate for about 300miles, no other passengers. I think 35front / 33back would be good then.