We have a 46' coach, pulling a toad. We had the Pressure Pro system installed at a Les Schwab tire center. It's the most expensive system but is very accurate and you don't have to worry about someone stealing one of the stems attached to the tire stem on other units. Works perfectly and has alerted us several times of low and high pressure. No problem with temperature so far. This system also measures several other variables which I do not yet fully understand..but they are carefully explaned in the owners manual.