Join Date: Oct 2013
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Grunt, they are great and they're inexpensive. I've had mine for about 5 years now, with no issues. The 120 volt version seems to fill faster than the 12 volt kind, which is not surprising. If you're planning to check/fill your tires at home, I'd recommend choosing that one over the kind that plugs into your cigarette lighter. The latter is the better choice if you want a portable pump you can leave in your trunk, or if you live someplace (like an apartment complex) where you don't have a close source of wall power to plug into.
One thing I'll point out (Seiya smartly alluded to this in his original post) is that not all air pressure gauges are created equal. I have one similar to the $20 one he linked to, except mine is an Intercomp brand used in racing and cost about $70. They both seem similar and adjust air pressure readings to account for barometric air pressure at the elevation of where you live. Their readings are simply more accurate. The pressure gauge on the Home Depot inflator (the Harbor Freight one was exactly the same) aren't as sophisticated and don't account for your elevation, so their air pressure readings are slightly off as a result. In my case, I live at sea level and the readings were over optimistic by 3 lbs.
So what you do is to get an air pressure gauge like the one Seiya has ($20) + the air inflator like the one I linked to ($25) and you're all set. Check the cold pressure at you target psi using both, and you'll know how much the reading of the gauge on your air inflator is off by at your elevation. That number will remain consistent, so going forward, you can just use the gauge on your air inflator for convenience, but adjust the pressure to accommodate for the error. So in my case, if I'm aiming for 40psi, I just use the gauge on the Home Depot inflator to fill the tires up to 43psi, knowing the gauge reading is off by 3psi. I could double check the reading with the Intercomp gauge, but in practice, I've found it's not necessary once I know how much I need to adjust the inflation pressure by.
Last edited by TitaniumVT; 10-11-2018 at 10:55 AM.