On J-trucks, 35's don't fit in back unless you trim or roll the fenders lip. I had 34's and cut them on the front edge of the rear fenders.
On wagoneers, 35's require either a mile of lift, or a lot of trimming. Fender opens are just small.
On WT Cherokees, 35's will fit with a 6" lift without the tires getting cut as the rear axle is much narrower than a J-truck rear axle.
My J10 with a Rusty's 6" and 34's:
You can see the rear tire rubbing in this photo:
P4130059 by
Stuka87, on Flickr
IMG_0238 by
Stuka87, on Flickr