I put the TST system on my class c about 2 years ago. I bought the flow thru valve model and put fill thru valve caps on them so I dont have to reach in between the duals if I need to add air. I have to put the front wheel covers on just right so the sensors point out the slot but I really love them and would buy them again in a heartbeat. With the kind of weight we carry and the unit being top heavy I would not move without checking the tire pressure but removing the wheel covers all the time and kneeling on the ground in the rain was getting to be a real pain. Now I just turn the unit on 3 or 4 min before I leave and I have all the pressures.
