New Z Owners - Check your tire pressure

kantonm · 03-14-2009, 02:09 PM

I had a toyota MR2 and the prevoius owner had the tires at 45psi...when i lowered the pressure I noticed that the tires seemed a little quieter, just a thought.
Also the advantages of Nitrogen for regular street drivers is that your pressure lights won't go off every time it gets a little colder outside...really annoying..
My father raced porsches for years and they all overinflated the tires on track and slalom days to increase the grip and response, maybe nissan is doing this to increase the handling for test drives... they ran as high as 50psi without tire damage, however the tires were deflated to normal for street or storage..

tvfreakazoid · 03-30-2009, 04:50 PM

Doesn't the nitro air will last a lot longer as well? But it's really expensive isn't it?

Quote:

Originally Posted by kantonm

I had a toyota MR2 and the prevoius owner had the tires at 45psi...when i lowered the pressure I noticed that the tires seemed a little quieter, just a thought.
Also the advantages of Nitrogen for regular street drivers is that your pressure lights won't go off every time it gets a little colder outside...really annoying..
My father raced porsches for years and they all overinflated the tires on track and slalom days to increase the grip and response, maybe nissan is doing this to increase the handling for test drives... they ran as high as 50psi without tire damage, however the tires were deflated to normal for street or storage..

ChrisSlicks · 03-30-2009, 05:18 PM

They pick 35 because that is the compromise number. The same tire on an Infiniti they would probably pick 33 to make it a little softer. On my Infiniti I would often go to 45 psi up front during auto-x to optimize grip with all the body roll. On the street I'm usually right around 36. If it's a wet auto-x you can deflate them some for a little more predictability.

Your tire isn't going to blow out at 45, but you would be more likely to break a belt if you hit a sharp object or a large pothole. It takes about 140 psi to make a tire explode.

03-14-2009, 02:09 PM	#1 (permalink)
kantonm Base Member Join Date: Feb 2009 Location: california Posts: 29 Drives: 06 Acura TL Rep Power: 18	tire noise? I had a toyota MR2 and the prevoius owner had the tires at 45psi...when i lowered the pressure I noticed that the tires seemed a little quieter, just a thought. Also the advantages of Nitrogen for regular street drivers is that your pressure lights won't go off every time it gets a little colder outside...really annoying.. My father raced porsches for years and they all overinflated the tires on track and slalom days to increase the grip and response, maybe nissan is doing this to increase the handling for test drives... they ran as high as 50psi without tire damage, however the tires were deflated to normal for street or storage..

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03-30-2009, 05:18 PM	#3 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 655	They pick 35 because that is the compromise number. The same tire on an Infiniti they would probably pick 33 to make it a little softer. On my Infiniti I would often go to 45 psi up front during auto-x to optimize grip with all the body roll. On the street I'm usually right around 36. If it's a wet auto-x you can deflate them some for a little more predictability. Your tire isn't going to blow out at 45, but you would be more likely to break a belt if you hit a sharp object or a large pothole. It takes about 140 psi to make a tire explode.