I have the 285/70-18 AT4W on factory OT wheels. At 7.5” wide the factory wheels are right at the minimum approved wheel width (7.5” - 9.5” is the approved range for Falken). No rub. I chose to keep the factory 33” spare under my GX. While the AT4W might have fit in the space, it would have been ~1” lower under the truck due to the increased tire width. I need as much clearance as I can get/keep for when I’m hitting the trails with my son in his Tacoma.