Sounds like a great trip. I've heard that about Rushmore - just plan it as sort of a "drive-by" on your way to somewhere else.
Tire blow-outs - funny how so many occur at high speeds, huh? Who woulda thought?
Almost every trip I am passed by other campers as I poke along at 65mph (sometimes 67!).
I have friends who do construction work, haul excavation equipment, pull work trailers, etc very safely and carefully. Yet, get them in a pickup towing a camper, and they just go as fast as they can on the highway. They were surprised when I gently pointed out that their tires were only rated for 65mph. Only thing that has slowed one friend is when he discovered the huge mpg boost when he dropped down from above 75mph to 65mph.
Anyways, drive safe!
