I currently run a forgeline 18x10 wheel with a 6" backspace with global west control arms and no clearance issues. The tire size is 275x35x18. I used to run Monocoque 3 piece 17x11" wheel up front with 6" backspace and stock control arms with 275x40x17 tire. The backside of the wheel hit the stock control arms so I had to grind down the control arms( i would not recommend doing this). I damaged the wheel, control arm, and also the stock fender. Young and stupid. And the tire hit the upper lip of the stock front fenders. Basically this combo did not work. Trial and error.