Probably just being paranoid but I was camping a year ago and saw a tt pull in with 2 spares on the back and I thought what a great idea. So I now have 2 spares hanging off the back, I figure if you hit something in the road it could blow out both tires. Better to have them and not need them. I checked with my dealer and they said it would present no problems by attaching another tire on the rear bumper.
2010 Jay Flight 28BHS
2007 Yukon XL 2500 6.0L 4X4