Bike High-Tech LCD Digital Tire Gauge, 300 psi

If your pump doesn't come with a built-in valve, this is a nice little toy, very compact and light - the photos online make it seem larger than it actually feels like in the hand. I like that it uses a replaceable standard 2032 cell - couldn't see this in any of the tech specs. While one might argue it could have been improved with a single multi-fit valve, the single purpose Schreder and Presta valves are colour-coded and very easy to use - nearly mistake-proof.When the pressure reading has stabilised you get a little beep too - a nice touch.

Just checked mine against 2 Snap-On tire gauges I know are calibrated within 1/10 of a pound and it is very accurate! It is very quick to take the reading and looks sharp! My only complaint is that it has no light built in for night riders. It is kind of difficult when checking pressure on Presta valves because if you don't have it just the right way it leaks air while trying to take the measurement.

I Like this tire gauge it works with both priests and Schrader valves and it’s accurate. It’s small and don’t take up much room in your saddle bag.

Every time i try to measure tires or suspensions pressure they lose air. This might be not a huge problem with tires but suspensions get empty in secs.

I received the AiraceUSA Tire Gauge on 20 December 2020. That same day, I tested its readings against a "JACO ElitePro Digital Tire Pressure Gauge - Professional Accuracy - 200 PSI", which I purchased in January 2020 for close to $54 less than the AiraceUSA gauge.I used two different floor pumps for the testing, each with an easy-to-read analog air gauge mounted on it: a JoeBlow Twin Turbo pump and a JoeBlow Sport pump. For the test tire, I used a Nimbus Sport bicycle tire with a Presta valve and a maximum inflation pressure of 80 psi.With the AiraceUSA gauge, the gauge nipple fit over the valve without much problem, but taking it off was an ordeal and incurred some air loss. Maybe the AiraceUSA nipple requires a break-in period to come off smoothly and without the feeling I'm going to strip the valve threads or break the valve off while trying to pull and wiggle the AiraceUSA off the valve. No such hassle with the Jaco and no air loss either.Each of the six times I tested the AiraceUSA against the Jaco, the AiraceUSA consistently read about 2 psi below the Jaco reading no matter which gauge I tested first after adding and re-adding air to the tire . The Jaco was also in closer agreement to the analog readouts on the floor pump gauges than the AiraceUSA's readings.I can't definitively say whether that means the Jaco and floor pump gauges are more accurate in their readouts than the AiraceUSA's. But I'm leaning towards the Jaco and floor pump gauges being more accurate.The Jaco digital gauge is also much easier to read than the AiraceUSA's readout, at least using the Presta nipple on the AiraceUSA, due to the flexible hose on the Jaco that allows its gauge to be twisted in multiple directions for the easiest reading. Can't do that with the AiraceUSA.The Jaco can be turned off instantly with a push of the "On" button. The AiraceUSA turns off automatically after 40 seconds when no air pressure is detected. A manual turnoff option on the AiraceUSA would be nicer IMHO.The Jaco uses two AAA batteries; the AiraceUSA, one CR2032 battery, which isn't always as easy to find at a store as a AAA.As for as value, I believe I got a much better deal with the Jaco than the AiraceUSA. Maybe at one third its price of $79.99, the AiraceUSA might be considered a decent buy. But at almost $80, it's a bit of a rip-off (stated politely) considering what little if anything it has to offer over the Jaco, other than a more compact size. I have my doubts, too, that at over triple the price of the Jaco, at least at the time I bought the Jaco, the AiraceUSA is any more accurate than the Jaco and perhaps may be less so.

I used to check the tire pressure in my bicycle tires it keeps giving me different readings not working properly

I needed an accurate tire gauge that easy to use, and does not change the pressure while measuring. As other reviewers have said, attaching the gauge with presta valves requires a little care. Once you've got the technique, it works every time. Measuring in bars to two decimal places has helped me to find the pressure at which I have the lowest rolling resistance for my riding conditions. At half the price of a reasonable road tire, that's a win.

The form factor is perfect to pack in a saddle bag--this is one of the smallest pressure gauges I've seen. The only problem I've witnessed is that it takes a while for the initial pressure to read--maybe 5 secs. Not sure why....