I know cold tire pressure should be 29, but when my tire is low I have to drive it to the gas station, by then the tire is hot

so what psi do you send in there when it's hot since it's almost impossible to go there and let the tire cool off before adding pressure

Add a few extra #s & check it later. Release the excess.

ya, that would do the trick...problem though, I was in conneticut and had a long way to drive, didn't want to drive the car with pressure too high

but that's good advice, thanx

Would releasing some "hot" air first then adding new "cold" air work too? Rinse and repeat as necessary.

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LilRedGXP
VIN: 128169
Delivery date: June 9, 2007

Automatic, AC, Leather Seating, 6 CD Changer, Monsoon sound, XM radio, Sport Metallic Pedals, did I mention Automatic.

Since my better half doesn't drive stick ... tis better to get an automatic GXP than no GXP at all.

Check the other tires at the hot temp. Fill the low one to the same pressure. You should be close.

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BIX A BEL Cool, Ebony leather, Chrome, loaded, no XM/onstar Founding member of the "Lost Sols Club"
Deposit (1100) - 9/29/05, 1101/1102 - 2 Feb 06, 2500 - 7 Feb 06, 3000 - 8 Feb 06, 3100 - 13 Feb 06, 3300 - 13 Feb 06, 3400 - 14 Feb 06, 3800 - 24 Feb 06 (112544), 4000 - 24 Feb 06, 4150 - 24 Feb 06
dealer expected deliver 6 March, arrived 28 Feb, picked up that night w 3.2 miles on the clock :)
NOT WAITING ANY MORE!

But isn't that cheating somehow? Like suggesting not going to a gas station thats so far away?

all of my tires were low

How about, check the tires cold, and write it down. Then, add the amount they were low to the hot pressure at the station.

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Deep, steel/sand, loaded except standard radio and no smoker's; #08974
Mods: Kappasphere CAI, Clear Image Shorty Header, second horn, visor decals, mudflaps, tonneau cover, brake light flasher, trailer hitch, 'lil Chromies, trunk monkey

I'm gonna go to about 10 lbs lower then the max and then release the air in the morning...that's the best way to do it as spider suggested, I just couldn't do it before a long trip

If tires are hot (warmed up) add 4 PSI to the cold rating. 29+4 =33.
Set all tires to 33 then you can check in the morning.

This is the correct procedure, according to Goodyear. It makes sense, too.

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John
Lexington, KY
Sky VIN 00252
5-Sp Manual
Midnight Blue

The plus-4 setting is probably accurate enough for most driving, too. Unless you drive aggressively, or the weather is too cold, the tires should gain about that much when warm.

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Deep, steel/sand, loaded except standard radio and no smoker's; #08974
Mods: Kappasphere CAI, Clear Image Shorty Header, second horn, visor decals, mudflaps, tonneau cover, brake light flasher, trailer hitch, 'lil Chromies, trunk monkey

Hey Perris air up your tires already! Its been 2 months now!

My tires gain around 2 psi (usually less) on a 16 mile, moderately agressive, drive to work.

Starting out with low pressure will gain slightly more. Starting out with high pressure doesn't seem to matter.

__________________
John
Lexington, KY
Sky VIN 00252
5-Sp Manual
Midnight Blue

get yourself a good gauge and a small air compressor for your garage.