So Bell Lexus in Scottsdale sells all of their GX550's modified with Vossen wheels w/35" tires and Westcott leveling spacers. All the talk about what size spare can fit got me curious to what they do, so I looked underneath. Bell does not give you a new wheel/tire to match their modified one, its the OEM wheel and tire! FWIW, when I upgrade the wheels on my OT, I see no reason to swap out the spare, the OEM one will get you to Discount Tire.