I moved to Colorado this year and rode my steepest descent today. ~10% down a windy road. Having not ridden this before, I was pretty nervous going down, so I bled off quite a bit of speed (averaged about 35 mph on the way down with heavy braking). I was worried about heating my rim and blowing off my tire. Has that ever happened to anyone?

I know Disc brakes can fade due to rotor heating. Does anyone have feelings about which potential failure is more likely, rim brake heating causing tire failure or disc brake heating causing loss of braking?

Thanks!
Alan