RE: Tire Pressure monitor
I just bought the Pressure pro system for my class A and tow car while at a rally last month. It works great and is easy to set up. however three separate vendors said that the rubber stems on my Honda CRV tow car should be fine- not true!
When I left the campground after 5 miles of driving one of the sensors on the tow car set off the alarm for low pressure. I refilled the tire with my onboard compressor and drove another 5 miles- again low air . I removed the sensor until I got home, where I had a tire dealer install metal stems and it's been fine ever since. I also had them put nitrogen in tires.
Also- when we were still in the campground I left the unit on so I could check the pressures every morning to see if there were any leaks- when the temperature dropped overnight , the pressures went down enough to set off the alarm. When the sun came out- they were fine- so I unplugged the unit
until we were ready to leave.