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Originally Posted by
J.Higgins
Two (2) PSI wont matter much either way, and you probably wont be able to discern any difference. When I was a kid working in a bike shop back in the early 70's, I don't recall anyone ever using a tire pressure gage. I was taught "the pinch test". You learned what the tire pressure felt like by squeezing the tire with your fingers. Your hands became self-calibrated after a while. I use a gage now for initially inflating, but I always pinch my tires before a ride. Old habit, truly, but it helps me to make an instant decision whether or not to add some air.
Same experience and same practice today.
They are accurate but not precise.
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