Being able to monitor the tires of a dolly and Toad are crutial. If something goes wrong, i.e. hung brakes, blowout, bad bearings, etc, the RV will hum right along and won’t even fell the extra drag caused by something wrong with the Toad.
I’ve had a personal experience with this when our old tow dolly suffered from a broken axle. When the wheel departed the dolly, there was no indication that anything was wrong. No thumps, no sound, no feel, nothing.
This same problem is with a 4 down, there is no indication of a blown tire, or hung brake (heat).
Adding a TPMS specifically for the TOAD/Dolly solved this problem. The TPMS unit I use monitors both the pressure and temperature of the rear tires on the TOAD and the two dolly tires. Continue reading “Dolly / TOAD Tire Pressure Monitoring System (TPMS)”