beartooth pass

No way would I do that. It's a good way to kill your tranny and/or brakes. You will be both a hazard and annoyance to others. Not to mention it will be very unpleasant to you. You need to find another route to pull the RV, and drive the Beartooth in your truck, so you can enjoy it. It would be a shame to turn one of the most beautiful trips on earth into a white-knuckle experience.

You may not have the time, but if you do, I think you would find it much more enjoyable to drive the Beartooth in your truck and loop back to Red Lodge on the Chief Joseph Scenic Highway. From Red Lodge it is an easy drive to Cody where the Buffalo Bill Historical Center is located. From Cody enter Yellowstone through the East entrance and on to West Yellowstone.

Let me know when you plan on doing this, I'd like to watch all the pissed off drivers behind you as they flip you off.

Not only be careful of the climb, but be careful of the descent and use your gears to save the brakes. Nice views but may not be able to pull out many times

Pullouts are there but not that many. Take care on the switchbacks because you're going to drift into the opposite lane!!

Very rugged trip pulling a trailer, lots of switchbacks. Be careful & watch for folks coming down the opposite way.

There are pullouts, but mostly on the left side as you go from Red Lodge towards Yellowstone. Hope you do okay on the trip, that's a pretty rugged climb from the bottom up to the top. It's been several years since I drove that highway, got to do it again some day.