billmck04

I found a discarded 315/75 R16 out in the middle of nowhere today and it just so happens to be the tire size I wanted to test fit on my truck. I had recently procured a set of 16x10 4.5in backspace (I believe that would be a -24 offset) Eagle Alloy wheels and I was curious if it would work before I dropped $1200+ on tires. So I de-mounted the 245's that were on the wheels and mounted the 315's, All I had was 2 small screw drivers and a tire iron (tool box is at work).
My truck has slightly cranked front bars and some load helper leafs in the rear. I have more pics in my profile under 98 F150 4x4.

AZFX4

I have 315/70/17s on my truck stock.. you need your torsion bars cranked up but I also don't have a valance no I don't rub on there.

I also had to trim the fender flare where you took a pic. I used a dremel and cut it out. Noone would ever notice unless they got close and looked.

billmck04

My biggest concern was the wheel offset, I have had 315's on there before but the wheel was inset more, and there was just a small touch on the rear of the frame. As for turning my bars up more, I like to have some droop in the front suspension, too much height makes it ride funky to me, the front suspension tends to top out too soon making it feel weird on high-speed stretches of spooky desert trail.

AZFX4

With stock offset before my spacers it rubbed on the frame but only at full lock. I had my tbars cranked all the time when I was flying down dirtroads, never really had a problem.