Thanks man, Im glad you like the bike. I converted it to a rear disc setup. The rear wheel/hub is a rear wheel off of a yz250 motocross bike. They all run 19" rear tires stock. I went with a wider rim but wanted to use the same spokes so I had to use a 19" wheel. The exact tire i wanted to run came in 19" and is DOT approved so I never gave much thought to it.