I bought a middle of the line gauge and trust it pretty well. The only complaint I have is that I have to make sure I get it straight onto the valve stem or it will read low. Just means paying attention when I check my tires. N e way, I'm at a week now and it got up to 40 today, then went back down. No tpms light, We have blizzard weather coming so I will probably get out and freeze checking them sometime this weekend. Then in the spring I'm going to pull the tire off that rim and see if I can straighten it out so that it won't lose air as easily, or just have the tires bead sealed every time. (not to worried about the rims, when I have the money for some 16" rims, the stock wheels will get winter tires.

Talk about re-programming the tpms, I am going to look into putting sensors into my aftermarket rims. That will be a re-learn twice a year. I need to check proper inflation on the 16's first to make sure it's worth the extra expense first. I can live without the tpms, But I like having the extra warning there.