I'm sure this is redundant so my apologies in advance. I have the stock 17s on my 4X2 F150. I want, when the time comes to replace them, a set of tires that give me a "bigger look". I had a 4X4 several years ago and liked the stance better than the 4X2. What is the largest tire I can put on WITHOUT replacing the rims or making in adjustments to the truck? I'm not opposed to a slightly "rougher" ride but do want good tread life as I put 120 miles per day on them. Thoughts?

TIA!