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
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03-09-2009, 05:03 PM | #16 (permalink) | |
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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.
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03-09-2009, 08:43 PM | #18 (permalink) |
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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.
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03-09-2009, 08:50 PM | #19 (permalink) |
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I have just checked my tire pressure. All 4 wheels 39 PSI.
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03-09-2009, 09:07 PM | #20 (permalink) | |
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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. |
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03-10-2009, 02:46 PM | #22 (permalink) |
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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.
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03-10-2009, 04:50 PM | #23 (permalink) |
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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.
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03-10-2009, 05:11 PM | #24 (permalink) |
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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.
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03-10-2009, 06:22 PM | #25 (permalink) |
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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.
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03-10-2009, 08:32 PM | #26 (permalink) |
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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.
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03-10-2009, 09:08 PM | #27 (permalink) | |
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Sounds like several had high pressure and several did not. I will check next time I take delivery of a new car. |
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