Hi I got your message but couldn't reply directly for some reason. My tires are 285/65/r18 with a four inch lift. These tires rub just a hair on the sliding door, so I do not think you could go wider. These tires do not rub on the wheel well at all. I have forgotten what the offset was exactly, I know that is vital info I am not sure if that is written somewhere on the rim or it could be measured, but I do not know. My tires are nitto terra grapplers. We just got back from a 1600 mi road trip involving both on and off road, and the tires were great. thanks Dan