Spare Tire Mounting:
Hanging a 33" tire on the tailgate of a wrangler is a horrible idea. The stock carrier is barely capable of holding the stock tire. At the very best hanging a 33" tire on the stock carrier, will only destroy the tailgate hinges, and sag the tailgate. Worst case scenario, it damages the tailgate and or the tub. I know most people get tired of lifting up on their tailgate to get it to close, and its equally annoying when the tailgate pops open and swings open when you hit bumps on the highway.
If you still want to mount a 33" tire on your tailgate, they make spacers and such, so you can get it to fit if it doesn't fit, but I tried to warn you.