Beartooth highway

good idea.

I did it with a with a Toyota (22Re engine, 125 hp) based Class C. Pretty much any class C can get over the road. We stopped often to let others go by and to enjoy the scenery. It is a beautiful road. Take your time.
As enblethen said, use your tranny wisely going up and down. The road is steep and has many sharp curves. Let the engine control your speed instead of cooking your brakes. Let the engine spin up a bit and you won't get your engine and tranny hot.
I am going both directions on the Beartooth this summer to really take my time. We will be spending the morning in the Lamar valley watching wildlife, going over the Beartooth, have lunch at the Red Lodge Cafe and then drive back to Yellowstone.

roadchasers wrote:
How challenging is Beartooth highway in a Class C?
I would appreciate any advice.

If you are good in the mountains - you could be fine.

Take a look - Youtube video links

We did it our 30 foot Class A with toad attached.
It can be a little intimidating at times. Not much for shoulders.
I would suggest using pull outs for faster traffic, watch the signs for down hill grades and use transmission to aid in braking.
I would definitely not drive it at night or inclimate weather!
Great scenery and loved the pink snow!

We've been over it a couple of times, but with only our truck. We have a diesel and FW, but we could tow over it if we had to. Having the diesel for braking is an advantage. In our drives over, we've encountered Class A's and C's, along with towables.