I think you will have rubbing issues with a 245mm wide tire. I have seen a few cars with 235s, but that's often pushing it.
I agree 8 inches wide at +50 will be tough. The offset will be crucial if there is any way 245s are going to work.
1999 9-3, 2002 9-5, 1979 900
z06 and a bunch of Chevy trucks