best tire pressure?

[azbobbybooshay10]

Originally Posted by Frosty

Get one of those digital tire pressure gauges and check your tire pressure once a week. I wouldn't trust the people at an oil change joint.

[Topik]

Originally Posted by azbobbybooshay10

WHY?

[ND4SPD]

you know what actually... I have one of those digital tire gauges, and I also have one with a actual gauge / needle, and the digital one is not very accurate. Maybe I just have a cheap one, but I would trust the pressure gauge over a digital one based on my experience.

[gulfcat]

Originally Posted by ND4SPD

you know what actually... I have one of those digital tire gauges, and I also have one with a actual gauge / needle, and the digital one is not very accurate. Maybe I just have a cheap one, but I would trust the pressure gauge over a digital one based on my experience.

Same here - neither of my 2 digitals was as good as either of my 2 with a short hose & swinging needle gauge.

I keep my front tires a bit higher pressure than the rear tires (34 front, 32 rear) to make up for my tendency to corner hard.

One other note - measure tire pressure when the tires are "cold" - you haven't driven anywhere & the sun's not on one side/end of the car more than the other.

[Tygerr]

Originally Posted by ND4SPD

you know what actually... I have one of those digital tire gauges, and I also have one with a actual gauge / needle, and the digital one is not very accurate. Maybe I just have a cheap one, but I would trust the pressure gauge over a digital one based on my experience.

I'll have to check this out. The digital one I use almost always reads different then the mechanical slide out gauges at a gas station. I always thought their gauge was just off, it never occured to me my digital guage could be crap.

[sonza68]

The slide ones are pretty inaccurate so I wouldn't use them to calibrate your digital gauge. Personally, I went with the standard version of this one: QuickCar Tire Gauge (standard, glow face or liquid filled)

[LinkMan]

Originally Posted by Tygerr

I'll have to check this out. The digital one I use almost always reads different then the mechanical slide out gauges at a gas station. I always thought their gauge was just off, it never occured to me my digital guage could be crap.

The mechanical gauges at the gas station are notorious for being the worst, even worse than the $1.50 chrome plastic slider you buy at the gas station check out counter.

If you get a good digital, those are more precise because of fewer moving parts, but cheap digitals are really no more accurate than cheap mechanicals.

I prefer my mechanical dial gauge which holds the needle on the reading till you release the pressure. A lot easier to read.

[Naturaltal3nt]

Originally Posted by Topik

WHY?

lol he's one of those guys

desolator if you live where it gets really hot during the day and cools off a lot at night the tire pressure will flucuate a lot. I have to chek my tires once a week cause az is ridiculous hot then cools way off at night. i have 225/40/r18 and i run 40 psi. You should run 32-34.

[JayZee]

my digital is better than my mechanical IMO (my one digital against the 3 mechanical i have)

[Spakes]

Originally Posted by marinofan

I would guess that the tire has some numbers on the size that follow the phrase (Max Tire pressure) Thats what I fill to.

and mine are at 40

The "Max Tire Pressure" on the side of the tire is what the tire can hold safely. The door sticker is what you go by. You can adjust a couple of pounds depending on what you want as of ride comfort over mpg.

The reason for the Max Tire Pressure on the tire is to match the tire with the vehicle. Say you have a F350 which is 60psi front and 80psi rear you need tires that can hold 80psi or more. As for our cars the lowest you usualy see a max tire pressure is 40psi. Therefore you have a tire that can hold what our cars need. With stock tires I wouldn't go no more than 35psi with the 215's and 33psi with the 205's. And wouldn't go no lower than 29psi with the 215's and 27psi with the 205's.