I am running 16x7 with 225 rubber up front and have no problems at all. You could probably go with the 235. In the rear, I imagine that with the spring relocation you could go 275 or 295. I am running 255 in back with a stock rear suspension on 16x8 rims with 4.5'' backspacing. If you are going to go wider though you might have to start thinking about the fenderwells too more than the suspension components.