Do any of the side-by-sides fit in the back of a 6.5' pick-up bed without having the back tires on the tailgate? Wife and I pull a small trailer to our hunting property and would like to be able to take a Side-by-side with us.

I’d get a bigger trailer.

No. A Honda pioneer 500 is about as small as they get. I have one and carry it in the back of the truck all the time but it’s not going to fit in a 6.5’ bed I don’t think. It barely fits in a 8’.

I second getting a bigger trailer.

I bought a honda pioneer 500 several years ago from a guy that had carried it in the bed of a truck...he had a big dent in the back of the cab and a new trailer which I bought with the machine. I wanted a bigger machine just didn't have the cash at the time and the 500, for me was just a better situation than a 4 wheeler but at a 4 wheeler price. It got me through a couple of years until I could get something better and I made a few $ when I sold it.

Unless you have pretty smooth roads at your hunting land...one of those smaller machines may beat you up a bit. It would go anywhere I needed it to, but it was a pretty rough ride at our lease.