Tire fitment 68 Dart
I've run 225/60s on the front of a Dart with no issues, but they're close (I don't recall what the backspace was offhand, it's been a few years). I know some people say they can run 235s on the front, but it seems to be hit and miss- each car being a bit different. Some can, some can't; they're right on the ragged edge. I'd personally err on the side of caution and not go over a 225.