Has anyone had problems installing 275/35/18's on a Dart or Valiant? I am installing offset shackles on my car and was hoping I could stuff those on as I need new tires anyway. I know there's the hump on the rear wheel wells. Does that usually interfere under compression with wide tires?

I also noticed that the center hub on my Dr Diff axles is larger than the centerbore of my current wheels so my 1/4" spacers are required for now unless I machine them out or buy a new set of wheels (which I'm thinking about). Does anyone know that center hub diameter?

Anything I should be worried about in the front? I already have larger T-bars and have raised the car just a tad to avoid machining tires as I was doing before.

I'm currently running a 255/40/18 all the way around. 18x9" with +32mm up front and +17mm in the rear with the offset shackles. I was hoping to get a square setup with both wheels and tires for the next iteration.