I just towed my 2011 Ford Fiesta SE automatic on its first long
tow (200 miles), and noticed something worrisome. After an hour
of highway towing at 55 MPH, with almost no braking, I stopped
and checked the wheel temperatures with an infrared thermometer.
The front passenger-side brake rotor read 130C (266F); the front
driver-side rotor read 101C (213F). There's an auxiliary braking
system, but its monitor indicated it didn't activate. The brake
pedal was up as far as possible. The parking brake was off. The
tire pressure was 31 PSI cold.
Has anyone else made similar measurements?