i have 4 GTA fronts with 245/50 tires on my T type, and the only rubbing i get is a little bit of a rub at the rear of the fronts (does that make sense?) at full lock. it barely touches the plastic inner wheelwell just enough to make noise. i have almost an inch of clearance around the balljoints and upper control arms at the closest points.
when i had 2 rears on the front, however, i had to run a 5/16" spacer and do a little "surgery" on the tierods with the angle grinder, and the tire would hit the upper contol arm at full drop to the point that i couldn't spin the wheel with the car on jackstands.