I had 8 of these - 4 on my RV/trailer and 4 on my truck. I just bought two more sets, one as a spare and one to replace the one that broke on my truck. I would give 5 stars, except for the one that recently failed on my truck after only a few months, but that was on a bike where I had to take the truck to a shop for the approaching metal on metal squeak. of the brake pad and rotor due to a frozen caliper. The alloy wheel and this sensor were covered in brown dust from a burned brake pad. Given the extreme circumstances, I probably can't blame that one sensor for a failure - the other 7 are still working fine. All of this says that I never want to be without her. Twice in the last 7 or 8 years I've had my 2 axle trailer blow out due to a flat tire or split which I only discovered after 1) pulled over and noticed it and 2) a motorist pulled up next to me with the passenger window down. and a woman waving at me and pointing to my trailer tire. Now that I know I'm not comfortable in a two-axle trailer, I count on them to keep me up to date on tire pressures and temperatures during our annual 6000-8000 mile trailer hikes in the summer.