Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Wheels & Tires (http://www.the370z.com/wheels-tires/)
-   -   New Z Owners - Check your tire pressure (http://www.the370z.com/wheels-tires/2524-new-z-owners-check-your-tire-pressure.html)

Namir 03-09-2009 04:03 PM
Quote:
Originally Posted by FricFrac (Post 41226)
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! :D

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 (Post 41130)
^^^ 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
http://i576.photobucket.com/albums/s...m/DSC01415.jpg

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. :tup:

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 (Post 41870)
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 (Post 42257)
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?


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