Widest front tires

Well in my opinion it would be a 235-60-15 (maybe).

Some have tire to fender interference even with that size. A 2nd gen Barracuda really can't take much of a front tire without suspension mods or cutting the front of the wheel opening.

The problem is that if you get very wide or much over 26" tall the swing of the tire as you turn catches and folds the front of the fender. We have had many threads on this.

Several guys have caught a fender with 225-60-15s