New Z Owners - Check your tire pressure
 

Hi All,

I took delivery of my new Z on Feb 12th. Today, I checked my tire pressure for the first time (while car was cold) and found it was ~45 psig on all four tires when the recommended pressure is 35 psig (sticker inside driver's door)!! I was surprised, so I checked again with a different guage - same results. The car has been driving fine and did not really notice or suspect a problem with tire pressure. I do notice some difference now in feel and ride quality now that dropped it to 35 psig.

Maybe, it is just a one time thing, but I wanted to bring this to everyone's attention in case others have same issue. Suggest you check the pressure of your tires.

Happy Z driving...:tup:

I was thinking about the same thing. I will check the pressure now. Thanks for sharing.

I had the same problem. At first, I thought it was just because it was cold, but now that it's in the 70s, and tire pressure alarm light was still up, so I went and checked it.

Same here—all four tires at about 47psi; spare tire was at about 50psi (10psi under). I checked them all the first day we had it.

Funny you mentioned this, as i checked my tires right when i got home from the dealer and all of them were around 45psi too. I'm not sure on Nissan's logic with this as they most certainly know the recommended PSI.

tires are usually over inflated during overseas shipping to help reduce the cars moving while on the boats

Quick question, How do I know if my tires were filled with air or Nitrogen? If they were Nitrogen, do I HAVE to put nitrogen? I have no clue where the nearest Nitrogen fill up center.

kinda hard to tell....do you have green or blue valve caps thats usually a giveaway. also if you have nitrogen your pressure shouldnt go up more than maybe 2psi under normal driving. where air would go up a bit more


no you dont have to have it

I hear its really expensive to have it filled with nitrogen. It's like 30 bucks per tire. That is crazy.
A local dealership in my area (sactown/Elk grove) has a nitro filling station. I wonder how much they would charge.

Nitrogen is just a bonus gas you can put into tires that lasts longer and can give better performance due to being lighter.

Most dealerships these days have nitrogen fill stations, and have some kind of plan if you buy a new car from them. I know that the dealership that I got my Z from has some deal where they give you a free nitrogen fill up each year if you purchase the Z or a set of OEM tires from them.

All my tires were at 36psi

Isn't air 78% Nitrogen anyhow? Does it actually make that much difference?

^^^ 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.

i will give you guys one proven advantage to nitrogen i can vouch for.

under hard driving the tire pressure stays very consistant even when the tires get EXTREMELY heated. my tires are about 29PSI cold and after beating on them at autoX or a track they are only up to maybe 32 or maybe 34 in the front under really hard driving.

with air your talking alot greater fluctuations in PSI with air i would be atleast 4-5 PSI higher

LOL - maybe Nitrous (N2O) would be good for performance :) I think you meant N2 :)

MC - good point. In racing having more precise control over your tire presure is very important. I know a lot of the Sprint car guys use bleed off valves to keep the presure consistant as the tire heats up...