[qcj]

Michael, I have two Milton, made in USA truck air gauges and one reads 2 psi more than the other. So I put 130 psi on the highter reading one in the front tires and my pressure pro said I have 125-126 psi. So which one is correct?? 315 tires are at max pressure cold (whatever cold is) at 130 psi. So when I check my pressure pro before I leave on a trip and during a trip and there is no more than a pound or so difference I usually don't worry. I really like my pressure pro and have not had any problem in the 5+ years I've owned it. It makes life a lot easier. I will have each tire weighed when I can find someone to do it.