I didn't want to hijack the ...Door Slams Hard topic, but I wanted to comment on Dave Metzger's comment about his tire gauge reading 5 psi higher than the Pressure Pro monitor.
I had a similar issue and Mike McFall points out that the monitor read out is very accurate. Be that as it may, I am looking at a gauge when I top off a tire and not at the monitor. So I took my gauge to a Discount Tire store and had it checked against their high tech, bug bucks tire filling machine. That way I knew if I was "on the money" or above or below a given point.
Pressure Pro is like the American Express card, we don't leave home without them.
George, I think the issue is weather the tire is safe to travel or not. I feel trying to keep a close eye on the pressure Pro for exact pressure readings with the temp variations etc. Is like herding cats. you are never going to win, as long as you can keep enough air in the tires your good to go :))
Actually in time you get the feel for what is normal and also when to panic.
Dave
Boy do I agree with that. You might have to move to a warmer climate.
Last year, at the California Chapter Christmas Motorcade, we had a tech-talk about tires. The speaker worked for a tire dealer. He suggested we take our tire gauges into his shop and have them tested against his standard. They do that regularly at the shop, and toss the gauges when they get out of whack, which they do with time.