I just spoke with a friend who tows 30,000 a year.
He swears by SmarTire TPMS. It has a triple monitoring system...pressure, temp, and rotation. If a tire pressure decreases, so does its circumference.
This system is not cheap, but neither was the purchase of your A/S!
I guess it boils down to 'to what extent are you willing to protect your rig?'
The SmarTire system is installed inside the tire by a stainless band.
and Gail (MAAAA)
31' 1981 Excella II
2001 F-250 7.3D Crew w/8'bed and Pullrite 180degree
"Ask the Man Who Owns One" (Packard, Of Course)
"Ask the Woman who lives with one...or more!" (Gail)