I'm sure this is on the site, just in a bit of a rush and won't have access shortly, so just go my first low tire pressues, few questions, looked through the manual also, does the 2013 G37x tell you what tire is low? In cold whether what should the PSI be? do we have to adjust due to the climate?

Thanks Guys

 

The psi rating of your tires is written on the sidewall. It's different from tire to tire. I think mine are maxed out at 50psi. Cold weather reduces your tire pressure and will throw a warning light (mine did today), but it does not tell you which one. Invest in a gauge, or take it to discount tire and they'll refill it for free.

 

In most cars, recommended pressure is on a sticker on the edge of the door. This is a more appropriate guideline than what is stamped on the tire itself, because it's specific to the car and the OEM wheels/tires on the car.

Buy a good quality gauge... not one of those pen gauges. And like GFN said, be accepting that extreme temperatures affect tire pressure. God damn science.

 

Thanks, I have the factory tires, forgot what they, do you fill it to the max PSI? Also, would you fill more or less in the cold?

 

No! For crying out loud...

 

Thanks for your previous response, really don't need another

 

You're welcome, hitlayers. I think.

Gauges like this are great. They're flexible, with an easy-to-use blow-off valve if you're trying to dial in a pressure. Should be able to easily find one under $20 at any auto store, or Amazon.



Good luck. Buy a gauge. Drive safely.

 

that's exactly the answer I was going to provide the OP with after reading the his post but then I scrolled down and there you are Rochester

 

somewhere between 30 to 38 PSI, do not over inflate or under inflate as it will damage your tires. is written on the driver's door panel.

the gauge is not so important as is important to measure with the same gauge over time.

and rule of thumb
10 F degree change = around 1 PSI

so during 90 F degrees in the summer, the tires at 32 PSI without inflating will be 25 PSI at 25 F degrees

 

I dunno, I think a good quality gauge is a good thing. ^^^

I was moving things around and only had a pen gauge in the car the other day when my warning light came on. Used the pen gauge and it exploded, parts went sailing I don't know how far away. Overfilled then equalized when I got home but would have been easier to do it all at the same time.

 

on my G i keep them at 33-35 cold and 30-32 in hot.

 

Wow.

You know what else takes a huge logistical burden off this air pressure issue? Run down to Sears and buy an air compressor.

 

I wish it mentioned which tire was low. My EX's TSX would tell you the pressure of each inidvidual tire and warn you of which was low. However I just use my trusty gauge that I use for my track bike and kart and easily figure out which tire is low.

 

I believe the rule of thumb is a change of 1psi for every 10 degrees of temperature change (up with higher temperatures and down with lower).

Here in CA where this time of year it's in the 40s at night, then 79 degrees the next day in the afternoon, it tends to drive the TPMS sensors nuts.

I found that putting 33-35 in cold (cold = drive from house to gas station 3 miles away) yields the best results (MPG, Wear and TPMS madness)

When my car was new, I didn't think to check the air pressure as I assumed it was correct. Not the case. It was around 26 psi, which may of helped explain the 15mpg I observed. With 33-35 psi, I average almost 18.5mpg mixed (mostly stop and go), which appears inline with what others observe.

 

Can the TPMS light go on if your tires are OVERFILLED?

MAX PSI on my tires is 50, so I have my tires set to around 45PSI cold.

I don't like to go by the car's sticker since that was for the stock tires. I have aftermarket (Toyos, 255-30-20, 295-30-20).