[CraigS]

X2 for the TST 507. My 10 sensor system has been flawless since getting the newest version in July 2010. Won't leave home without it.

Aside from peace of mind, I can now safely use lower tire pressure by following the manufacturers recommendation for my CAT weighed coach. Instead of filling to 100 PSI 'to be safe', I now use 75 PSI rear and 86 PSI front to get a significantly smoother ride.

Remember: Pressure changes with ambient outdoor temperature. Cold days need more pressure - hot days need less. With a TPMS you can easily make changes before setting out.

That reminds of a distinct advantage with the TST 507 RV: Its sensors transmits even when the coach is standing still. With many other systems, the sensors do not transmit until you start moving. For me that is too late. I need to check pressure before we get going for the day.