Follow up to my comments on brakes in the mountains in BC from Cache Creek to Whistler. Someone recommended using gears! But of course my good man it is the first thing you do on a long downgrade. I was going uphill sometimes in first gear as that was all my 04 Tundra could do on the awesome steep grades. Coming down was mostly second and a lot of first gear plus brakes. Rockies are a piece of cake compared to the road I was on. 2-lane winding and STEEP!!
Take a look at this road on Google Earth.
I'm sure any one who tows knows engine braking. My new Tundra has a much more efficient means of gearing down yet not as good as our Subaru Outback which has paddles right on the steering wheel. We live in the mountains in Northern NH and do a lot of down travel using engine braking. I get a kick out of the tourists and the brake lights being on while I just coast down in a lower gear.
The Tundra and Subaru both have factory TPM systems on them so I now only have the trailer on our aftermarket TPM.