Leaderboard

I'd agree with Fifty here. I am fairly positive that 800lb trailer will have a 2" hitch attachment. Most things you attach to your hitch will have a 2" end. Not sure if you have a 1st or 2nd gen TC, but the 2nd gen TC's have pretty good rear clearance.

Go with the class 3. You don't want a class 2, only to have to buy all new accessories, since you already have what you need for a 2" receiver.

I have the Curt class 3 hitch. I keep a hitch ball in mine and it's never scraped on any driveways that I've noticed - even though the front bumper will scrape some of the driveways, the hitch doesn't. I haven't dropped the spare tire, so I couldn't say if it would cause an issue, but I can say that my spare tire still has clearance all around. Even with the hitch ball in, I haven't hit my shins on anything, but I've also had lots of trucks in my past, so I'm maybe more accustomed to it (knee knockers on about half of the trucks I've had and I'm 6ft tall). Even for light use, I don't think I'd bother with a class 2 and it's itty-bitty 1.25" receiver.