Most garages will take a 7 foot door due to the 8 foot ceiling (plus a few inches since most garage floors are lower than the house elevation by 3 - 6 inches due to code). An 8 foot door won't fit in most cases and would probably be more than an easy do it yourself job.
That being said I doubt that any of the small trailers with a roof top AC will fit.
without the roof top AC would not go in even with the wheels off and rolling pads used to just barely keep the brake drums off the floor. The Escape
vent wanted to hit in my case. The 16' Scamp
has a higher ceiling than many so yours might be that few inches lower.
That being said many have managed to get smaller wheels, rolling pads, etc and shoehorn them in.