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I want a guage that I can get on the damn valve stem, It's bad enough that you have to lay down, get the tire in the right position where the stem is accessible, them try to check the PSI. At 65 yrs.old and not the most nimble, it would appear the EZ air where you can add air w/o removing the guage is the best I see so far. I don't have one but the one I use now is a pain to get on the valve stem, then you have to remove it to add air, etc.
My back tire is also a pain, I spent the money a year ago and got the key chain digital that checks with a push of a button, it has special caps that screw on the tire. I check the pressure now every time I ride and only have to mess with the tires when they need air. I thought it might be over kill when I got them, felt a little lazy, but glad I did.
The free one from J&P Cycles that you get when you sign up for their Gold Club. I was expecting a shitty, free plastic gauge, but instead got a very high quality, metal, and very accurate gauge. I have bought gauges for $30+ that wasn't as nice as this, and it was "free"!
I also use the Slime one that Metalkat posted, I just find that the JP gauge gets in hat tight space on the wheels better.
Gathered 6 or 7 gauges I had laying around including 2 different HD gauges, a couple of old 4wd units from years gone by, two from a couple different tire shops collected over the years, and one that is less than 3" long that I got as a 'throwaway' from a meeting at a hotel ballroom.
You may have seen the ones that were common when gas was over $5/gal and some idiots were pontificating to just keep tire pressures up and save all that fuel.... and these little 'gimmez' were floating around everywhere you looked...
Tried 'em all on both tires; 4 of them were within +/-1# of each other (and the service test baseline); one was off a couple of #s; and one of the 'tire shop' units was off +3#s (low).
The little cheap 'throwaway' was right in the middle of the 4 that were all but dead even.
Go figger...
Tire pressure ain't rocket science. I use what fits in my tool pouch. One note for those with the fancy chrome valve stem caps (like me) If you tighten the cap tooooooo tight the little o-ring can end up inside your valve stem and no guage will read. Been there done that drove me freakin nuts.
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