TST TPMS
I just put on my TMPS and they say 76 psi, the tire gauge said 80psi which one is more accurate? I know TST say theirs are + - 1.5 psi, so which one do I believe? Thanks as always
Forum Discussion
cmeed,
Maybe you got lucky but comparing a tire gauge to a compressor gauge that is constantly vibrating does in no way prove accuracy.
I didn't know that tire shops had a certified master gauge but if they do, that means it had been verified against a dead weight tester or some other standard that has also been certified. The calibration instrument's certification can be traced all the way back to some national or international standard.
If my TPMS sensors are advertised to be +-1.5 PSI, that means there is a potential difference of 3 PSI between the highest and the lowest sensor. I went to NAPA and bought a quality tire gauge, the larger one like the truckers use. With it, I set all my tires at 80 PSI. Then I installed my TPMS sensors. They read between 79 and 81 PSI. I called it good enough.
Maybe you got lucky but comparing a tire gauge to a compressor gauge that is constantly vibrating does in no way prove accuracy.
I didn't know that tire shops had a certified master gauge but if they do, that means it had been verified against a dead weight tester or some other standard that has also been certified. The calibration instrument's certification can be traced all the way back to some national or international standard.
If my TPMS sensors are advertised to be +-1.5 PSI, that means there is a potential difference of 3 PSI between the highest and the lowest sensor. I went to NAPA and bought a quality tire gauge, the larger one like the truckers use. With it, I set all my tires at 80 PSI. Then I installed my TPMS sensors. They read between 79 and 81 PSI. I called it good enough.
