For the sedan, the recommended tire pressure on the 215/55-17 G-Y RSA is 30 lbs. (max on the sidewall is 44psi).
Those of you that mounted up 235/50-17 Pilot Sport A/S, have you experimented with the tire pressures? The max on the sidewall is 51psi. Any suggestions re what the best tire pressure is to run? Thanks in advance.

<font color=green>GG</font color=green>

 

For comfortable daily cruising, the 32-35 range works well. You get (slightly) better gas mileage, but a bumpier ride, if you go with the higher end of that scale.

For autocross days, something in the 40-44 range.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

I agree with those numbers completely.

03.5 Sedan/B. Silver/Prem/Winter/Aero/Tint/Rims
69 Chevelle Hard Top BB/4.11's/Posi

 

Thanks guys. Are either of you running the Pilot Sport A/Ss? Not having autocrossed, why the higher pressures in that situation? Wouldn't you lose some traction at the higher pressures?

<font color=green>GG</font color=green>

 

Actually, I'm still running my stock Bridgestone Turanza EL42's. I'm thinking about switching to Michelin Pilot Sports (not A/S) or Bridgestone Pole Position S03's when these are worn out.

Autocross (or Solo2) doesn't usually exceed 60mph. It's a technical course with lots of tight turns, so the emphasis is on driver skill and car control. The higher tire pressures keep the edge of your tread from rolling under when cornering, which actually keeps you from losing traction. There aren't really any straights to worry much about straight-line traction. It also helps adjust your car's steering behavior, by running different pressures front-to-back. The exact pressures to use at an autocross depend on your car's setup, drivetrain (FWD/RWD/AWD), and some experience (which I'm lacking at the moment). [img]/w3timages/icons/smile.gif[/img]

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

Ahh, thanks for the info.

BTW, I weighed the 215/55-17 RSAs at 27 lbs. The combined weight of the RSAs on stock 6 spoke wheels is 48.5 lbs., so for anyone interested, the stock 17" 6 spoke wheels weigh about 21.5 lbs for future reference.

<font color=green>GG</font color=green>

 

Thanks.

Did you account for the extra air in the tires? Unless they were only "inflated" to 14.7psi, you may be off by a bit... [img]/w3timages/icons/tongue.gif[/img]

Just giving you a hard time.. I doubt it's enough to matter. It does point out that aftermarket 12-16lb rims can save quite a bit of unsprung weight, though.

Still wondering how much the 5-spoke rims weigh. I've heard they weigh more than the 6-spoke rims.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

Yeah, I've also heard that the 5-spokers weigh more. I don't think you're going to get into a < 16 lb. 17" wheel unless it's forged and really pricey though. And of course the 18s and 19s that many are going to are going to weigh more, especially for those that insist on chrome wheels.[img]/w3timages/icons/laugh.gif[/img]

<font color=green>GG</font color=green>

 

SSR Competition rims are about 15lbs in the 17" sizes. They have a 18" rim that's only 17lbs. Unfortunately for me, they only come in 17x7.5 and wider, and I need to stick with the stock 17x7 size. You're right about the price though.. they seem to start at just over $300 per rim.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

Regarding my eligibility to answer this, I have an 02 altima SE and have 22000 miles on my Pilot Sport A/S's 235/50/17's

35 is a great pressure all the way around, any less and you start seeing extra wear at the edges (cupping?) after extended mileage (>10k or so)

DO NOT lower the pressure in these tires less than about 30 psi. It will destroy the tire rapidly. wonderful tire.

BTW i get my 6MT sedan TOMORROW. Phx area

 

I started with about 34 lbs since I got the tires yesterday. I'll play a bit to see what I end up with.

<font color=green>GG</font color=green>

 

For those interested, I weighed the combination of the stock six spoke wheels with the 235/50-17 Pilot Sport A/S. At 49.5 lbs., they are 1 lb. heavier than the stock combination.

<font color=green>GG</font color=green>

 

that is 5 lbs lighter than stock 2k2 altima wheels with the same tires. GO INFINITI!

Just an FYI

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