55k+ miles review
I put a set of Duratrac LT265/70R17 Load Range C on in early 2015. 5 years and over 55k miles later they were on their last leg. I typically ran 38psi on tarmac, and off-road was adjusted as needed for the trip/trail. I initially tried running them at maybe 42psi, but it was a bit harsh. Load and Inflation Tables can be found on Toyo's website here:
Find the Correct Tire Inflation Pressure | Toyo Tires
Stock P265/70R17 @ 32 psi /1.1 = 2204.5 lbs
Revised LT265/70R17 LR-C @ 2204.5 lbs = 43.6 (splitting the difference between the 40 and 45 psi ratings)
The wear pattern was good and flat although the inside tread was more worn then the outside by ~1/16" after 55k. The vehicle tracks straight, but does need an alignment, so I attribute the wear to some suspension settling and mis-alignment vs tire pressure.
When I first threw on this set of LTs I could feel a slight power drag / decreased acceleration at slow speeds / take off. It wasn't much, and I quickly adjusted to it compared to the stock Ps. The extra weight was never an issue and not noticeable at speed.
These tires did me well. In the dirt, mud, and rocks of basic trails these things ate up the terrain. Grip galore both on and off road, and controlled the rig great. No issues in the rain either. I didn't have an opportunity to get them into snow and ice, but they did handle a few heavy downpours and hailstorms with ease.
I had a few screw/nail punctures over the years, but they never let me down. Often they didn't even drop air pressure and TPMS never activated. It was only me seeing the shiny worn screw and pulling it that let air out. Standard tire repair kits were easy to use and held up with no issue.
They do need to be rotated and properly inflated, otherwise there was some, but not severe, steering wheel shake at 60mph ~+/-5mph.
Rolling through a parking lot at ~<5mph you could feel the tread of the tire just a slight bump bump. I didn't feel it off road or at speed.
Noise... yup, they get louder and louder. At 70mph on the freeway, tire noise, wind noise, and then engine noise, in that order with tire noise way in the lead. My new set of replacement tires (Toyo Open Country AT III LT285/70R17 Load Range C) are dead quiet in comparison (wind, engine, then tire noise @ 70mph)...but they are brand new, so I'm not giving them a pass just yet. It is just painfully obvious how stark the difference in noise is. With the Duratracs the noise isn't horrible, but you will have to speak up with telephone calls or cabin conversations, but the radio isn't at max to drown out the tire noise.
Mileage. Wasn't impacted measurably over the stock Dunlop Grandtrek AT20s. Maybe a 0.5 MPG hit at the worst, but this was a stock diameter Duratrac. I added some additional weight to the rig over the years, so I really can't say the Duratracs are the culprit... it was a negligible difference.
If you get a good price on them and want to be worry free for traction off road without going full MT, then these are a good tire if you are okay with a bit of extra rolling tire noise.