New Z Owners - Check your tire pressure

NeedforZ · 04-08-2009, 09:20 PM

Finally got around to checking mine. 45psi all around. Will probably drop it to 40.

texmedic · 07-08-2009, 10:23 AM

Hey not to bring such an old thread but I got a low pressure light a couple weeks after getting the car and after researching I read that a lot of 350 guys [350 forum] had switched to nitrogen and the problem cleared up. I went to the dealer and it cost me 23$ for life time nitrogen which was reasonable, but a couple of days ago I got another low pressure light. Although I havent had a chance to check the pressure in the last 2 days yet, I was curious if anyone else has the recurrent light issue?

Modshack · 07-08-2009, 11:26 AM

Quote:

Originally Posted by texmedic

Hey not to bring such an old thread but I got a low pressure light a couple weeks after getting the car and after researching I read that a lot of 350 guys [350 forum] had switched to nitrogen and the problem cleared up. I went to the dealer and it cost me 23$ for life time nitrogen which was reasonable, but a couple of days ago I got another low pressure light. Although I havent had a chance to check the pressure in the last 2 days yet, I was curious if anyone else has the recurrent light issue?

Ummmmm...Did you ever think you might have a leak? Nitrogen is not a cure for anything. Look for a Nail...You've got one in the tire somewhere..

texmedic · 07-08-2009, 11:41 AM

I checked for nails when i switched to the nitrogen, but not since the new light coming on. thats a good call though!

Zcott · 07-08-2009, 12:05 PM

FYI the big sell of nitrogen is safety related.
Mainly because it reduces the chance of driving on tires with dangerously low pressure.
Nitrogen molecules are much larger than oxygen, and cannot "seep" out through the tire rubber like oxygen does. SO... the tires stay properly inflated for much longer/indefinitely...

It may also be less affected by tire heating, but seepage is the main reason it gets "pumped" so much.

texmedic · 07-08-2009, 12:32 PM

that was what I had read about the nitrogen. I wouldnt have thought about it except someone on a 350 forum I believe had written about similar issues and the switch had apparently cured it. I have noticed a little better mileage though. I gave the tires another once over for nails just in case { i thought checking the tires for nails and the like was sorta a given} and right now I'm working and dont have my guage with. I'll check the pressure tomorrow once I get home.

kannibul · 07-08-2009, 01:27 PM

Quote:

Originally Posted by MC@MYGTR

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

What, do they float the cars over?

Sorry, that don't make sense to me!

kannibul · 07-08-2009, 01:34 PM

Quote:

Originally Posted by ssqpolo

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.

Actually, overpressure tends to not blow a tire - it runs cooler...

Underpressure heats them up more, weakening the tire, eventually causing a failure.

At least, that's the motorcycle knowledge speaking.

My bike recommends 35psi. I run 40. Tires wear longer...in my case.

mrarroyo · 07-08-2009, 06:25 PM

The over pressurization of the tires for overseas shipping and until sold is to reduce the formation of flat spots since the cars sit for a longer than normal time periods.

Zcott · 07-09-2009, 09:03 AM

I checked mine last night - 37psi.

The sidewall states not to go over 40psi for setting the bead, but lists max pressure for max load at 51psi.

That seems to imply to me that you guys who were in the 40's were OK.

dnazz32 · 07-09-2009, 10:41 AM

I think the max PSI for the Bridgestone Potenza re050a (sport package tires) is over 50psi. I want to say it is either 51 or 55 psi.

Phimosis · 07-09-2009, 08:00 PM

Why are you guys trippin'? The tires are rated for 51psi, ie you can drive them for their entire 25,000 mile life expectancy with no harm to the carcass. Nissan, like any other rational person says use 35 psi to improve contact patch deformation and therefore traction.

Coming from the factory, the last thing you want to do is put 30 psi in it, then have a slow leak and have 50 cars with flat tires to deal with with when you're trying to unload 5,000 cars off of a ship in an 8 hour window.

Arrvaxx · 08-18-2014, 10:19 PM

Came across this and wanted to bump it current. My son bought a car in Vegas, was shipped from California, PSI was something crazy like 50 or 60.

Check that pressure!

aszyd · 08-18-2014, 10:27 PM

My tire pressure was super low when I purchased it... TPMS light was on. The dealer was under the impression that the system just needed to be reset, nope. Thankfully that was a quick fix.

07-08-2009, 12:32 PM	#51 (permalink)
texmedic Base Member Join Date: Jun 2009 Location: Austin Texas Posts: 192 Drives: 09 370Z Rep Power: 15	that was what I had read about the nitrogen. I wouldnt have thought about it except someone on a 350 forum I believe had written about similar issues and the switch had apparently cured it. I have noticed a little better mileage though. I gave the tires another once over for nails just in case { i thought checking the tires for nails and the like was sorta a given} and right now I'm working and dont have my guage with. I'll check the pressure tomorrow once I get home. Last edited by texmedic; 07-08-2009 at 12:35 PM.

08-18-2014, 10:19 PM	#58 (permalink)
Arrvaxx A True Z Fanatic Join Date: Jul 2013 Location: Whore Island, MN Posts: 1,243 Drives: 40th F.I. Twin Turbo Rep Power: 17	Came across this and wanted to bump it current. My son bought a car in Vegas, was shipped from California, PSI was something crazy like 50 or 60. Check that pressure! __________________ 2010 370Z 40th Anniversary (#480 born 1/19/2010) Fast Intentions Twin Turbo \| Varis Arising II \| Limited Edition Recaro Sportster \| Tuned by Specialty Z \| 604hp 525 torque @14lbs boost on 100 octane

08-18-2014, 10:27 PM	#59 (permalink)
aszyd Track Member Join Date: May 2014 Location: Florida Posts: 877 Drives: Magma Red 370z T+S Rep Power: 20	My tire pressure was super low when I purchased it... TPMS light was on. The dealer was under the impression that the system just needed to be reset, nope. Thankfully that was a quick fix. __________________ Competition Clutch\|Fast Intentions\|Maxbore\|NST\|Setrab\|Stillen\|Tomei\|Uprev\| Z1 Avant Garde\|SPC\|Stance\|Whiteline Aerojacket\|Seibon\|Tanabe\|TRS\|TWM

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04-08-2009, 09:20 PM	#46 (permalink)
NeedforZ Base Member Join Date: Mar 2009 Location: DFW Texas Posts: 163 Drives: 370z Touring 7AT Rep Power: 16	Finally got around to checking mine. 45psi all around. Will probably drop it to 40.

07-08-2009, 10:23 AM	#47 (permalink)
texmedic Base Member Join Date: Jun 2009 Location: Austin Texas Posts: 192 Drives: 09 370Z Rep Power: 15	Hey not to bring such an old thread but I got a low pressure light a couple weeks after getting the car and after researching I read that a lot of 350 guys [350 forum] had switched to nitrogen and the problem cleared up. I went to the dealer and it cost me 23$ for life time nitrogen which was reasonable, but a couple of days ago I got another low pressure light. Although I havent had a chance to check the pressure in the last 2 days yet, I was curious if anyone else has the recurrent light issue?

07-08-2009, 11:41 AM	#49 (permalink)
texmedic Base Member Join Date: Jun 2009 Location: Austin Texas Posts: 192 Drives: 09 370Z Rep Power: 15	I checked for nails when i switched to the nitrogen, but not since the new light coming on. thats a good call though!

07-08-2009, 12:05 PM	#50 (permalink)
Zcott Base Member Join Date: Jun 2009 Location: D/FW, Texas Posts: 89 Drives: 09 370Z Sport PG M6 Rep Power: 15	FYI the big sell of nitrogen is safety related. Mainly because it reduces the chance of driving on tires with dangerously low pressure. Nitrogen molecules are much larger than oxygen, and cannot "seep" out through the tire rubber like oxygen does. SO... the tires stay properly inflated for much longer/indefinitely... It may also be less affected by tire heating, but seepage is the main reason it gets "pumped" so much.

07-08-2009, 06:25 PM	#54 (permalink)
mrarroyo Base Member Join Date: Jun 2009 Location: Heaven on Earth Posts: 211 Drives: 09 Nissan 370Z M6 Rep Power: 15	The over pressurization of the tires for overseas shipping and until sold is to reduce the formation of flat spots since the cars sit for a longer than normal time periods.

07-09-2009, 09:03 AM	#55 (permalink)
Zcott Base Member Join Date: Jun 2009 Location: D/FW, Texas Posts: 89 Drives: 09 370Z Sport PG M6 Rep Power: 15	I checked mine last night - 37psi. The sidewall states not to go over 40psi for setting the bead, but lists max pressure for max load at 51psi. That seems to imply to me that you guys who were in the 40's were OK.

07-09-2009, 10:41 AM	#56 (permalink)
dnazz32 Base Member Join Date: Apr 2009 Location: Massachusetts Posts: 20 Drives: 69 GTO, 68 Firebird Rep Power: 16	I think the max PSI for the Bridgestone Potenza re050a (sport package tires) is over 50psi. I want to say it is either 51 or 55 psi.

07-09-2009, 08:00 PM	#57 (permalink)
Phimosis Enthusiast Member Join Date: May 2009 Location: Oildale, CA Posts: 412 Drives: 2013 911 4S Rep Power: 415	Why are you guys trippin'? The tires are rated for 51psi, ie you can drive them for their entire 25,000 mile life expectancy with no harm to the carcass. Nissan, like any other rational person says use 35 psi to improve contact patch deformation and therefore traction. Coming from the factory, the last thing you want to do is put 30 psi in it, then have a slow leak and have 50 cars with flat tires to deal with with when you're trying to unload 5,000 cars off of a ship in an 8 hour window.