When I,m coming into Salt Lake from the East on I80 with my 8000 travel trailer behind my Tundra I just lock it in 3rd gear and cruise at about 60 MPH
Hardly ever using the brakes. Also in the Trundra if you are in drive and you start hitting the brake the trans will shift lower by itself. Also in the mountains
I increase the trailer braking, on my brake controller, I just leave it there until I get back to flat ground.
