New Z Owners - Check your tire pressure

Namir · 03-09-2009, 04:03 PM

Quote:

Originally Posted by FricFrac

LOL - maybe Nitrous (N2O) would be good for performance

I think you meant N2

I put helium in my tires, reduces unsprung weight.

Yes air is about 78% nitrogen, and unless the nitrogen filling place is flushing all the air out of your tires and replacing it, I doubt you would get more than 90% pure nitrogen in your tires. If that 12% is worth it to you then by all means do it, if not... then I don't think its really a big deal.

I'll probably get nitrogen in mine because the place I buy my tires from does free nitrogen inflation.

Crash · 03-09-2009, 04:19 PM

LOL! Yeah, N2. Thanks!

ssqpolo · 03-09-2009, 07:43 PM

there's a small circular sticker on my windshield by the VIN that says my tires have nitrofill--purified nitrogen. I have heard on several occasions the advantage of filling with nitrogen (like MC said: pressure doesnt change as much). At the dealership i got the Z from, its free, so I will definitely always be filling with nitrogen if i need to. Also AK, there is no problem with mixing normal air with nitrogen.

AK370Z · 03-09-2009, 07:50 PM

I have just checked my tire pressure. All 4 wheels 39 PSI.

Forrest · 03-09-2009, 08:07 PM

Quote:

Originally Posted by Crash

^^^ Correct. There's no reason to fill your tires with NO2. It's really pointless... Don't pay for it. That's like filling your tires with Helium. (Stupid and wasteful)

However, depending on if you got the sport package, the tires may be rated for 45PSI for normal driving (tread ware). Most vehicle manuals will say 35PSI to be on the safe side (as most tires are rated at 35PSI), but newer tires these days are rated much higher for daily use. For track days, it's good to air them down to about 30PSI. They're perfectly safe (and definitely going to have more life) at 45PSI if you're not tracking the car.

sports package tires here and the tires clearly say DO NOT EXCEDE 40 PSI. i hate to say it but i am going to listen to it.

front tires 37.5, rear 38 and 39. There all set to 35.5 now, it gets cold here lately so tonight they will be at 35, will put them at 35 even in summer time.

zZSportZz · 03-10-2009, 12:16 PM

Just a quick question to those who had high tire pressure...were your tire pressure sensors going off?

Zcar · 03-10-2009, 01:46 PM

It is always a good idea to check tire pressures immediately after taking delivery of a new car. I buy cars rather frequently and have learned not to trust the dealers and in most cases find the tires to be underinflated even on the high end vehicles like Mercedes. This 370Z is the first auto where I found them all to be overinflated.

AK370Z · 03-10-2009, 03:50 PM

As you can see, the tire pressures are tire (19" Sports Package Tires) specific meaning Nissan didn't just put a generic tire pressure for all the Z trims. So, I changed all 4 tires pressure to 35 PSI.

epod86 · 03-10-2009, 04:11 PM

They might overpressure at the dealer to prevent the rubber from deforming permanently when the car sits on the lot. The 'rounder' the tire is, the better off it will be. Plus, they don't know when they will touch the car, or for how long it will just sit there, so they probably overpressure it so that it doesn't go flat on the lot. My dad tends to overpressure the tires on our cars when we leave them. That and hook them to trickle chargers.

Crash · 03-10-2009, 05:22 PM

35PSI is always safe. That's what I run on my car too. They may say don't exceed 40PSI because they don't know where the tires are going to be (environment-wise) so that makes sense to me. Here in Los Angeles, people run 40+ all the time.

But 35 is better for performance anyway. You get slightly better traction with 35PSI.

semtex · 03-10-2009, 07:32 PM

I just checked mine. A perfect 36.5 all the way around. I say perfect because I tend to always prefer my tires 1-2 psi above the official recommendation. Mind you, it's probably just due to a 1.5 psi variance between my pressure gauge and the dealership's.

Fun42 · 03-10-2009, 08:08 PM

Quote:

Originally Posted by zZSportZz

Just a quick question to those who had high tire pressure...were your tire pressure sensors going off?

In my case no sensors were going off, no warnings, etc. I was just checking the pressure on my daughter's car and I checked my Z. Wow... 45 psi is high!

Sounds like several had high pressure and several did not. I will check next time I take delivery of a new car.

molamann · 03-11-2009, 08:29 AM

Just checked it and it was 41psi all around. Would there be any notable damages to my tire if I drove it around at this psi for over 2 months?

ssqpolo · 03-11-2009, 08:38 AM

Quote:

Originally Posted by molamann

Just checked it and it was 41psi all around. Would there be any notable damages to my tire if I drove it around at this psi for over 2 months?

no not at all. if it was super over inflated then u will see uneven wear in the tire, plus run the risk of blowing out.

molamann · 03-11-2009, 09:08 AM

Hmm, what is considered "super overinflated?" I'm guessing somewhere near 50+psi?

03-09-2009, 04:19 PM	#17 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 589	LOL! Yeah, N2. Thanks! __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

03-09-2009, 07:50 PM	#19 (permalink)
AK370Z Administrator Join Date: Sep 2008 Location: NJ Posts: 9,930 Drives: 09 370Z MB Sports M6 Rep Power: 10	I have just checked my tire pressure. All 4 wheels 39 PSI. __________________ The370Z Signature Pictures ll Want to rock our forum decals on your car? Then click here! ll How to Embed YouTube Videos In a Post STOP! (Hammertime) ll Become a Premium Member Click HERE ll F.A.Q. Are You a Nissan Dealer? Click Here to Become A "Supporting Dealer" and Start Listing Your 370Zs In Our Inventory Section My Monterey Blue Z ll My Exhaust --> My Intake --> G3 Nissan's Official Response Regarding Oil Temp Issue: CLICK HERE Need a Set of Cheap Winter wheels /Tires? Then Visit The Banner Link Below and Place Your Order. You'll Help Keep The370Z Alive.

03-10-2009, 03:50 PM	#23 (permalink)
AK370Z Administrator Join Date: Sep 2008 Location: NJ Posts: 9,930 Drives: 09 370Z MB Sports M6 Rep Power: 10	As you can see, the tire pressures are tire (19" Sports Package Tires) specific meaning Nissan didn't just put a generic tire pressure for all the Z trims. So, I changed all 4 tires pressure to 35 PSI. __________________ The370Z Signature Pictures ll Want to rock our forum decals on your car? Then click here! ll How to Embed YouTube Videos In a Post STOP! (Hammertime) ll Become a Premium Member Click HERE ll F.A.Q. Are You a Nissan Dealer? Click Here to Become A "Supporting Dealer" and Start Listing Your 370Zs In Our Inventory Section My Monterey Blue Z ll My Exhaust --> My Intake --> G3 Nissan's Official Response Regarding Oil Temp Issue: CLICK HERE Need a Set of Cheap Winter wheels /Tires? Then Visit The Banner Link Below and Place Your Order. You'll Help Keep The370Z Alive.

03-10-2009, 05:22 PM	#25 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 589	35PSI is always safe. That's what I run on my car too. They may say don't exceed 40PSI because they don't know where the tires are going to be (environment-wise) so that makes sense to me. Here in Los Angeles, people run 40+ all the time. But 35 is better for performance anyway. You get slightly better traction with 35PSI. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

03-10-2009, 07:32 PM	#26 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 53 Posts: 5,995 Drives: People to drink Rep Power: 32	I just checked mine. A perfect 36.5 all the way around. I say perfect because I tend to always prefer my tires 1-2 psi above the official recommendation. Mind you, it's probably just due to a 1.5 psi variance between my pressure gauge and the dealership's. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

03-09-2009, 07:43 PM	#18 (permalink)
ssqpolo Track Member Join Date: Jan 2009 Location: Florida Posts: 882 Drives: '12 Black Nismo Rep Power: 267	there's a small circular sticker on my windshield by the VIN that says my tires have nitrofill--purified nitrogen. I have heard on several occasions the advantage of filling with nitrogen (like MC said: pressure doesnt change as much). At the dealership i got the Z from, its free, so I will definitely always be filling with nitrogen if i need to. Also AK, there is no problem with mixing normal air with nitrogen.

03-10-2009, 12:16 PM	#21 (permalink)
zZSportZz A True Z Fanatic Join Date: Mar 2009 Location: Maryland Posts: 1,095 Drives: 370z Blk on Blk 6MT Rep Power: 18	Just a quick question to those who had high tire pressure...were your tire pressure sensors going off?

03-10-2009, 01:46 PM	#22 (permalink)
Zcar Base Member Join Date: Jan 2009 Location: Maryland Posts: 5 Drives: 10 370Z Roadster T/S Rep Power: 16	It is always a good idea to check tire pressures immediately after taking delivery of a new car. I buy cars rather frequently and have learned not to trust the dealers and in most cases find the tires to be underinflated even on the high end vehicles like Mercedes. This 370Z is the first auto where I found them all to be overinflated.

03-10-2009, 04:11 PM	#24 (permalink)
epod86 Base Member Join Date: Feb 2009 Location: Houston, TX Posts: 229 Drives: 06 Mustang GT BK M5 Rep Power: 241	They might overpressure at the dealer to prevent the rubber from deforming permanently when the car sits on the lot. The 'rounder' the tire is, the better off it will be. Plus, they don't know when they will touch the car, or for how long it will just sit there, so they probably overpressure it so that it doesn't go flat on the lot. My dad tends to overpressure the tires on our cars when we leave them. That and hook them to trickle chargers.

03-11-2009, 08:29 AM	#28 (permalink)
molamann A True Z Fanatic Join Date: Jan 2009 Location: Los Angeles Posts: 1,666 Drives: 370Z with NAVVVVV Rep Power: 284	Just checked it and it was 41psi all around. Would there be any notable damages to my tire if I drove it around at this psi for over 2 months?

03-11-2009, 09:08 AM	#30 (permalink)
molamann A True Z Fanatic Join Date: Jan 2009 Location: Los Angeles Posts: 1,666 Drives: 370Z with NAVVVVV Rep Power: 284	Hmm, what is considered "super overinflated?" I'm guessing somewhere near 50+psi?

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