class c in the smoky mountain national park

While I've only spent a day or so in the park, I had no difficulty with my somewhat larger class C except for the Cades Cove loop. It's passable by large vehicles, but there are overhanging branches and--more troublesome--many people pulling off and parking next to the road in inconvenient places, often leaving little room to inch by. I would suggest renting a car one day to go around that loop (it's very well worth seeing).

As for Pigeon Forge and Gatlinburg, it's often slow going and congested in any vehicle.