What tire pressure do you guys use?

Matt_370Z · 07-23-2012, 06:30 PM

I have a 2010 sport/touring with the stock Bridgestone Potenza on 20" wheels. The cold max load rating is 51psi.

I know from past experience with my cars that the cold rating is usually a little high to keep a tire at and that having slightly less in the rear usually improves handling. All I can get from the manual is the general statement to inflate to whichever cold rating. I've noticed TPMS doesn't start bugging you until the pressure falls below 30psi which is of course extremely low.

What's a good general pressure that you guys keep your tires at? 43-48 or somewhere in there? Do you keep them all the same or slightly lower in the front/back?

I should add: this is just used in around town/freeway driving (not the track). I'm just one of those who likes to "do things right."

Thx in advance --
Matt

Trips · 07-23-2012, 06:37 PM

I would suggest 34psi like its recomended

kenchan · 07-23-2012, 06:49 PM

both my G and Z run 36psi cold in the summer months. in the cooler months i run 37.5psi, 42psi for storage.

TreeSemdyZee · 07-23-2012, 07:16 PM

Quote:

Originally Posted by Triple's

I would suggest 34psi like its recomended

I tried to squish that little bug on my computer screen.

Trips · 07-23-2012, 07:23 PM

Quote:

Originally Posted by TreeSemdyZee

I tried to squish that little bug on my computer screen.

rhd · 07-23-2012, 07:33 PM

I am kind of anal about this kind of stuff too.

When ever I buy stuff, things, etc. whatever, I take close-up digital pics and put it under that stuff's folder called "data" or "info".

Then when I want to reference it I just go to, in this case my 370Z folder and open my tire pressure pic... it's inside the door (in the manual too), also inside the door is the manufacture sticker which is good info to have on hand!

Saves a trip to the garage!

Mine is a base model...

Trips · 07-23-2012, 07:48 PM

Thanks for the comfirmation

35psi not 34psi

this applies to the sprt pkg tires also

Matt_370Z · 07-23-2012, 10:21 PM

Quote:

Originally Posted by rhd

I am kind of anal about this kind of stuff too.

When ever I buy stuff, things, etc. whatever, I take close-up digital pics and put it under that stuff's folder called "data" or "info".

Mine was built in 3/2010 as well -- good stuff. Cool that you keep a photo log.

Thank you guys for the responses and I'm glad I asked. I read through the manual a little quickly and figured it was talking about the tire's recommendation (not the label inside of the door which I assumed was for base model tires). It just seems counter intuitive to me to inflate a 51psi max tire to 35 but that explains the TPMS warning when it's <30. A quick little trip to the garage and I'm now at 35 even... Thx again.

CrownR426 · 07-23-2012, 10:23 PM

Mountain driving I like 32/30
DD I like 33/33

ChrisSlicks · 07-23-2012, 11:14 PM

Quote:

Originally Posted by Matt_370Z

Thank you guys for the responses and I'm glad I asked. I read through the manual a little quickly and figured it was talking about the tire's recommendation (not the label inside of the door which I assumed was for base model tires). It just seems counter intuitive to me to inflate a 51psi max tire to 35 but that explains the TPMS warning when it's <30. A quick little trip to the garage and I'm now at 35 even... Thx again.

The 51psi max is the maximum pressure for the tire under maximum load. Tire pressure is increased with load to reduce heat build up in the side wall due to tire flex. To operate the tire at max load you would have to carry about 2500 pounds in the poor Z, or be running continuously at 180 mph, neither of which is possible

The manufacturer's tire pressure recommendation on the other hand is an every day tire pressure for the tire operating at average loads with average speeds (highway speeds), this is the one that you want to follow.

07-23-2012, 06:30 PM	#1 (permalink)
Matt_370Z Base Member Join Date: Apr 2010 Location: Novato, CA Posts: 15 Drives: 2010 370Z Rep Power: 15	What tire pressure do you guys use? I have a 2010 sport/touring with the stock Bridgestone Potenza on 20" wheels. The cold max load rating is 51psi. I know from past experience with my cars that the cold rating is usually a little high to keep a tire at and that having slightly less in the rear usually improves handling. All I can get from the manual is the general statement to inflate to whichever cold rating. I've noticed TPMS doesn't start bugging you until the pressure falls below 30psi which is of course extremely low. What's a good general pressure that you guys keep your tires at? 43-48 or somewhere in there? Do you keep them all the same or slightly lower in the front/back? I should add: this is just used in around town/freeway driving (not the track). I'm just one of those who likes to "do things right." Thx in advance -- Matt

07-23-2012, 06:37 PM	#2 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,730 Drives: 🔰 Rep Power: 10	I would suggest 34psi like its recomended __________________

07-23-2012, 07:48 PM	#7 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,730 Drives: 🔰 Rep Power: 10	Thanks for the comfirmation 35psi not 34psi this applies to the sprt pkg tires also __________________

07-23-2012, 10:23 PM	#9 (permalink)
CrownR426 A True Z Fanatic Join Date: Nov 2008 Location: South Korea Posts: 4,676 Drives: Manual Rep Power: 848	Mountain driving I like 32/30 DD I like 33/33 __________________ Love + Hardwork + Passion RIP SVTRacer

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07-23-2012, 06:49 PM	#3 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	both my G and Z run 36psi cold in the summer months. in the cooler months i run 37.5psi, 42psi for storage.