First, I need to buy a motorcycle trailer
You should consider something like the Ace single motorcycle trailer. It folds for storage so it doesn't take up too much room, and it comes with wheeled stands on each side so you can move it around and keep the wheels off the ground. It is plenty light enough to tow with a car, but you will want at least two people if you are going to pick it up and throw it in the back of the SUV. A quick check online shows they are about $900. The ace trailer my dad bought came with some decent looking 12" alloy wheels, and bias ply Kenda K353 5.3-12 tires. The tires are only speed rated for 65 mph, but held up just fine at 70-75 for long periods of time, they barely even got warm! The bearings are easy to service, there is just a cap on the end of the axle that you pry off to let the old grease come out when you put new grease in. The hubs also only got warm even with extended highway use. Our Ace trailer got used twice so far for hauling grey import bikes from Canada to Georgia.
As far as complaints with the trailer:
The inner axle seals on our trailer are iffy, and let grease sling out at high speeds and get the wheels dirty.
There are sharp edges on the trailer tubes which may damage the wiring.
It was probably our fault, but the bracket holding one of the fenders on cracked(I think from strapping it down). I would have expected it to at least bend first, but it just cracked.
When we were getting the first grey import bike, my CBR 250R, my dad decided against buying a trailer, so we rented a Ufail motorcycle trailer which had a big barn door on the back. On the way up to Canadi
a we got 18 MPG, in a crossover rated for 32 highway.
MPG improved slightly to 19 with the addition of a motorcycle on the back. To compare, with the Ace riding INSIDE the crossover we got 28 mpg on the way up(going fast), and 29 mpg on the way down with it deployed and loaded with a bike. The fuel savings alone was a pretty good incentive to get the trailer, but not having to stop every 200 miles or so to add gas to a 15 gallon tank at 18 MPG was pretty convenient as well.