Don't think the issue is with 2wd also not with diameter of brakes it's to do with the caliper catching on the back face of the spoke. So in theory bigger gives more clearance.on 4wd cars you can buy a brake kit from reyland or use std.
You could put wheel spacers on but not a fan so hence the sale.
I have ap but if these don't sell will buy the kit and sell my ap and comp wheels to cover the cost.