The only radiator-busting drive is the one across Death Valley from Las Vegas to Lone Pine. That is a route to see at least once, too. But August is the most severe on a radiator.
I think the drive from Reno is far more scenic.
As for brake burning: People need to know, don't EVER descend from Horseshoe Meadows, Whitney Portal, Tioga Pass, or ANY mountain pass, with the gear set in D (Drive). You should ALWAYS down-shift to 2 (second gear), and if you are still needing to ride the brakes, use the brakes to slow down to 15 or 20 mph, and downshift to 1 (First)! You only shift up, or back to D, if the car is coasting slower than you want. Once you are back to gentle descents, you can shift to D.
Using a lower gear uses engine compression to keep the speed down, so you don't burn out your brakes. Overheated brakes can fail completely, putting your life at risk!!! At a minimum, overheated brakes will warp the rotors (the discs), causing braking from then on to feel a pulsing sensation, until you have a brake repair job done.