but a +38 is about the closest offset you should run on the front on an 8.5" wheel. I have the +35 setup with 245/40 tire with a lowered suspension which clears a front BBK without any clearance issues.
I also have a 285/35 rear on a +41 rear wheel setup without any clearance issues or fender rolling. There is plenty of room too for a rear BBK with this offset. I also have the later model HICAS setup, so if you can check fitment prior to purchasing the wheels I'd suggest that too. 275/35 is about the max tire width for 9.5" wheel.