So I have the 6.5 inch lifted platinum and had another question about rims and tires. Toyo's spec chart says that their 37x13.50xR20 is not approved for a 12" wheel only an 11". Is one inch really tht big of a difference? And the wheel I would like to mount to is the 20"x12" Fuel Octane Deep. If octane made it in a 10" or 11" and still in the deep format that would be awesome but I don't have a clue. Any advice?