What is the largest tire that will fit a wagon?

I think the wagon is the same as the other models when it comes to tire clearence. A lot will depend on how centered your rear axle is. Even dead centered, I don't think a 275/60/14 tire (if you can even find that size anymore) will fit under it without doing some tub work. The widest 60 series tire that will fit under mine is a 225 without worrying about clipping the side walls on a hard corner.