I can't help myself
I like what the mid-70's Pro Stock builders did. They stretched the front wheel opening to the front by moving the front of the wheel opening forward and adding plus / minus 4" in the middle. Then they moved the front axle centerline forward 2". That allowed for not only a good size tire, but additional clearance right where the tires want to hit that curved fender lip. Added bonus of moving the centerline forward..... more room for the rack.