There are several threads ongoing that are asking about tire fitment, so in the interest of getting all these threads merged into one, hopefully we can use this to aggregate it all. I'll start: Stock OEM Tires sizes: 2wd/4wd std - 255/70R16 (30.1" x 10") 2wd/4wd std - 255/65R17 (30.1" x 10") FX4 Package - 265/65R17 (30.6" x 10.4") FX4 Package - 265/60R18 (30.5" x 10.4") - this probably needs confirmed, the website is a bit confusing. Great tool for size comparisons: https://tiresize.com/comparison/ General: The stock front "wings" are a limiter to overall diameter in full lock position. These are removable, you probably do so "at your own risk", but in stock configuration it's looking like a 265/70R17 is about as big as you'd wan't to go based on my eye, which is about 31.5" x 10.5". Width is another concern, there is very little clearance between the back of the tire and the spindle assembly. Again, this is conjecture or my attempt of an "at least consider it", I think going to a wider tire, even if it's only marginal, may require less offset. Rear looks to have plenty of clearance. Looks like 16" wheels fit as well, so that opens up some possibilities. I like the look of the OEM steel wheels, may be a good setup with some 235/85R16's for winter.