I agree the RV is 8 1/2 foot wide save for the mirrors might go out to 9 or a bit more. Should be no problem with a 10 foot wide door.. BUT HEIGHT... That's the issue
True story: The Michigan state police give a Trooper a Safe Driving award if he goes long enough without denting anything.. I was reading the news on the award.
The contestant While exiting the Headquarters Garage. Did strike the HEADER of the door And POOF went his award eligibility for another 4 years. (paraphrased).
We figured out how he did it.. Can you guess? (and no he did not pull a wheelie).