I have a 2014 F-250 XL 4wd Crew Cab Long bed w/ 6.2L that came with the Stock steel wheels and 245/75-17 tires. The wheels are fine, and I might be interested in upgrading them at some point, but for now, I really want to upgrade the tires. The stock tires (General Grabber HTS) look like donuts on this rig. I've searched, but I can't seem to find what I'm looking for in terms of tires that will fit. What I'm really seeking to do is get some bigger tires that offer a bit more ground clearance, are e-rated, and are all-terrain. I'm almost 100% positive I'll go with BFG All-Terrains, but I don't know what size I can fit that will not require a lift, but will look a lot less like donuts. Any help would be great. I've also considered trying to find a set of stock aluminum wheels with tires already on them from Craigslist, but again, I need to know what size would look better.

Lastly, if I do increase the size of the tire, how hard is it to re-calibrate the speedometer / odometer? I pull a 33' Travel Trailer that has a loaded weight of about 7500lbs, so I'm not looking to go crazy w/ the tires. I still need to be able to tow that load with no problems.

 

What engine do you have? That will make a difference with over-all gearing and a trailer. In terms of what fits, 265/70-17 are a little bigger, and 285/70-17's are also a stock fit on some versions. They still don't look like big tires, though.

 

Sorry, I meant to include that. I have the 6.2L.

 

The biggest tire that the factory puts on a 2014 SD is a 275/65R20. That tire measures out to 34.1" tall and 10.83" wide. That means that if you choose to put larger tires on those stock 17" steel wheels, keep the dimensions within those numbers and you'll be fine without any sort of rubbing at the extremes of suspension travel.

The dealer can calibrate your odometer/computer to account for the OEM tire sizes only, don't know what that costs but maybe you can sweet-talk him being that you just bought a truck from them.

Here's a link to a tire size calculator, with some digging on that site you can find a list of BFG tire sizes.

Tire Size Calculator

Joe

 

Thanks! That is exactly the information I was looking for.

 

I put some 285/70/17 BFG's on my 250 and they look pretty good. They are 33" and are close enough to stock that the speedometer isn't off when checking it with a GPS.

 

how was the mpg change going to the 285/70/17?

Sorry, didn't realize this thread was almost a year old. I was searching for info on certain tires and came across this. But, being a year later, I imagine there should be some time tested input out there.

 

I put 285/70/17E BFG TA/KOs on my rig, slightly larger than the stock 265/70/17E. My speedo is 3% slow, not a huge issue. I lost about 1 MPG with the slightly larger tires.