What's the largest comfortable tire size fit for my Superduty
 

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you can go to a 285/75/16 on a factory rim without any rubbing. That is what I have on my 04 F250.

Based on how tight the 285s are on my truck, I would not go bigger on a stock truck. You won't be able to run front tire chains with a 285, FWIW

Tire Size
 

I have 285/75R-16 Cooper AT3's on my truck with stock plow suspension (X code front springs). I have no rubbing or problems. However, they do not fill the wheel wells. According to Cooper, they are 1" wider and 1" taller than the 265's. The next size up is 315/75R-16, and they are 3" taller and 2" wider than the 265's. They will probably hit the leaf springs on turns. Unfortunately, the only way to find out is to try them on. Also, anything larger than 285's will require wheels wider than the stock 7".


RON

I have 295-75-16. They rub at lock. use to have 285 and they did not rub.

285's since stock rims are pretty narrow... 305's and 315's will balloon pretty good if you put them on stock rims. I had 315's on 8" wide rims (the minimum recommended width) and that was still a bit narrow. They also squirmed pretty good. Put my new 315's on 10" wide rims and now they wear even and hardly squirm at all. Pretty happy!

I run 305 nittos in the summer on 10" wide wheels and only rub the air dam a little. My old 305's didn't rub at all. I have 285's on stock rims for winter, no rubbing at all, but don't fill up the wheel wells like the 305's.

For me 285/75R16s or 295/75R16s are what I would run, the 295 being the largest I would go. I currently have 285s and will keep buying them as I think they are a very good size for a stock height truck and stock wheels. My 285s are pretty aggressive but they do not rub at all.

Sweet cause I just want a bit bigger I'm buying Goodyear duratrac AT cause I'm not off road as much as I used to be and I have firestone dest MT but I like aggressive so an aggressive all terrain is nice look and still off road ready for me if I get a 2 am " I'm stuck" call

My 1999 250 s duty, came with 35/12.5r18, that rub bad, found set of 265/70r17 custom wheels, with 1/2 tread dept. Would this be a good way to go? Will be pulling trailer with it. Also concerned with looks, as the 18, look so good, but too much offset, stick out, and rub l alot, just looking for thoughts ,I dont like the 16in wheels, they look to small, thanks

I'm pretty new to everything here, so what exactly do these numbers mean? I'm guessing the last number (R16) is the radius from the center of the wheel hub to the edge of the tire? Thanks!