Tire gauge comparisson - Accu Gage, Auto Meter 2160, Dan's Auto, Longeacre
Channel: lieber d
Date: 2015-09-20

Accu-Gage Tire Gauge with Pressure Release Valve http://goo.gl/5dL9Ik
Auto Meter 2160 NASCAR Tire Pressure Gauge  http://goo.gl/3NGC5X
Dan's Auto tire gauge http://goo.gl/9tGy02
Longacre Deluxe 2 ½" GID Tire Gauge 0-60 by ½ lb - 52003 http://goo.gl/VfWThw
Later I also did a comparison with Intercomp (360060) 4" 60 PSI Air Pressure Gauge. http://goo.gl/GJ3Vxk

Most Amazon 5 star reviews on tire gauges did not actually mention how the accuracy is determined. So I want to see for myself. I compared 5 tire gauges with price range from $5 to $80. After checking tire pressure of 2 vehicles, I found there is little difference among most gauges (within 0.5~1 psi) except Dan's Auto gauge. According to the comparison, Dan's Auto pressure gauge reads 2-3 psi off of Auto Meter, Logacre, Accu-Gage, and Intercomp gauges. The difference is more than ±3% as stated by the manufacturer.  (I contacted the importer about the difference. They quoted the manufacturer's message regarding the difference. See below)

"Most of the pressure gauges got their standard of the accuracy. And most of them are according to ANSI(American National Standards Institute) Grade B40.1.
The accuracy of this Grade is as following: (example: our tire gauge—60 psi)
·         0~15 psi: ±1.8 psi (±3%)
·         16~45 psi: ± 1.2 psi (±2%)
·         46~60 psi: ± 1.8 psi (±3%)"