Dura Trac tires for new truck. Next size larger or not?
 

New truck ordered. 2019 F150 super cab 4X4 with sport pkg. I plan on replacing the OEM 275/65 R18 tires with LT Dura Trac tires. I am staying with the factory rims and not doing a leveling kit. My question is, would their be any down side to going with one size larger tire which I assume would be the LT 275/70 R18? Any input or suggestions is appreciated. Thanks.

The only down side I can see would be the 275/70/18 are E-rated and would ride firmer than your stock load range C tires. If you went with 285/65/18 they would be load range D which would ride a little firmer than your load range C's but not as firm as load range E's. The 285/65/18 are 32.8" and will work without a leveling kit.

NASSTY, Thanks for the reply. I did look at the 285/65/18 but the specs say it should be on a 8 to 10 inch wheel and it is my understanding that the sport wheel is 7.5 inches so I didn't know if it would be a safe fit.

On my 18 Lariat stock rims have Toyo AT II's in 285/65 R18 and fit the rim great. I did get a 2 in level kit, but wouldn't need it from everything I've read/heard. I just wanted it a level looking when I got the tires.

https://cimg0.ibsrv.net/gimg/www.f15...0d60a09f75.jpg

I loved the Duratrac on my 2012 F150 with stock rims. Now I have the 2018. I went to get the Duratracs again but ended up with the Wrangler Ultraterrain.
Stock tires were 275/65/18 the new ones are 285/65/18. Also, the Ultraterrain are E rated and only slightly more expensive than the Duratrac SL rated.
I live in Colorado and drive in the snow a lot. These have been excellent in the snow.
https://cimg2.ibsrv.net/gimg/www.f15...93de588ba9.jpg
Good Luck,

To those of you who have gone with the 1" larger than stock diameter tires. As far as how it looks in the wheel wells, was it a noticeable difference?

I went from 275/55/20 to 275/60/20 but same overall size you are looking at.

I think it fills the wheel wells a bit better. It's not a huge change though.

https://www.f150forum.com/f118/rear-...4/#post6165007

285/75/17s with rear block removed

The 285's fit the wheel well so much better. Will you lose mileage? Yep....about 1-2 MPG with an E rated 285 I have found. However...I would never go back to stock size. They look too small. I also like the E rated for going into corn fields and going down level b roads a lot around the Midwest. They do not rub at all with no lift in any flex of the suspension.

I went with the 275/70/18 duratracs in a "E", they just look normal to me now. You will see a hit with mpgs though, be prepared for that. What I like about this size is it's a standard tire size for a 1 ton, so easy to find.