Dorian Pressure pro used to read the two Front tires. 4 Rear on my coach (that's six tires) and all 4 of my Towed's and had room for a spare or two if I'd have bought more senders.
True Story
First trip with it it alarmed. Sure enough front tire on towed low. Aired up repeatedly and went to tire store after return home. They found I'd been Screwed so they removed the screw and put in a patch no charge (Road hazard warrant)
Another RVer same system, too busy to install it right now. about 15 miles later tire totaled, rim, brake rotor and over 2 grand in body work.
