you all check your tire pressure? all 4 of mine mine were down to 25 Psi from the recommended 32.. ......

 

Gotta check them once in awhile. I probably check mine every two weeks or so. I use a dial type gauge, only check them in the morning, or before I go anywhere, and I have my trusty old'. bicycle tire pump to "top them off as needed".

It amazes me how many cars I see with under-inflated tires. And I've seen many that were damn near flat.

 

Yes! I'd never seen tires drop so low so fast before!
But this is a heavy car and these are big tires. So make sure to check them at least every month. I find they are usually down ~1 psi then.

 

I have two dial type gauges. One I use on the cars, one I use on the motorcycle. The one on the cycle has a hose and a relief valve. So I can overfill and bleed down to where I want with ease. Same with the car gauge, except in that case, I need to "rock" the gauge on the stem to drop the pressure. I believe them to be much better than the old "stick" type of gauge and I handle them very carefully at all times to reduce chance of damage to the gauges.

 

I dunno if you can buy them aftermarket, but my 06 Pony Package came with little valve stem caps that read (sort of) the pressure in the tire and let you know if it's at the proper 32 psi, or if it's lower than where it should be.

The site is www.tireXam.com and it shows how the caps work on there.

Cool little idea, so I never need to manually check the air pressure unless the cap is showing that the pressure is down.

And on the topic of low psi, about two weeks ago one of my tires was down to about 26 psi, so I filled it up & it leaked out again, so I took it in to my dealer today and they found a 3 inch nail punched into the inner sidewall about half way up the tire. So, since apparently you can't patch sidewall punctures, baby got a new $400 Pirelli today, likely thanks to some jealous ***** at the mall where I work.

 

Anyone do nitrogen yet?

 

Most of the local auto stores sell valve caps that have a little green/yellow/red pressure indicator on it; I know the local Pep Boys and Autozone have them. I wish I could remember what they're called, but they try to tell you what the tire pressure range is based upon the cap. My dad put them on his '91 Jaguar, and I discovered that they weren't all that good a pressure gauge...It was supposed to come up red when it was below like, 28 or 30 lbs, and the fronts were running at 25 lbs when I checked it because they looked low. The funny thing was, when I took off the cap to check the pressure, and then screwed it back on, all of a sudden it came up red.

I dunno that I'd trust those; gimme a digital indicator, or a dial gauge any day.

 

Did your tire pressure monitor goes off?

 

Yeah, I wouldn't be able to trust 'em. They're constantly out in the elements, not to mention moving around and around with the tire...not too surprising you had one that "stuck", and then decided to work again. Neat idea in theory though!

 

I can't really see weather or motion being a problem with these. The design is so simple I don't really see it being affected by much in terms of operatings conditions. For weather and stuff, they have a fairly thick plastic shell around the outside, so there's nothing exposed at all to the elements, and as far as motion is concerned, the design just uses 3 little pressure sensitive rubber rings to indicate the pressure, nothing computerized or digital in any way, so it shouldn't really be an issue.

They've got a little tiny valve which basically creates an open-system with the tire, and as the tire pressure drops, so too drop the outer (and bigger, and heavier) rubber rings to indicate the air pressure inside the tire.

That's not to say you shouldn't check your air pressure with an actual pressure gauge from time to time, but the indicator caps do provide a very quick, simple system of showing whether your tire pressure is where it should be at or not, and I don't at all think they're junk, or useless little addons.