My cousin has them on his 1 ton SuperDuty. He likes them fine, except they don't last long on big trucks, and they are expensive tires. Another friend has them on a Suburban. He says the same.
The tread rubber is soft. That's why they wear out fast on big trucks with big power. There are posts about that on various truck forums.
A friend has them on his TJ and likes them in 33 x 10.5 R15 load C. FYI - those are really a 33 x 11 R15. So they're not really narrow. They're medium width, IMO.
In all sizes I've seen, they run a bit wider than stated size.
On a Jeep they last fine. Just make sure you get load C. These tires are stiff and ride slightly rough even with load C. With load D or E they'll beat your spine.
If you get them, have tire store add more sipes to center treads for wet road traction, wet rocks, and for packed snow and ice.
What I don't like is the stiff sidewalls, which cause harsh ride and high rolling resistance (less gas mileage). However, there are people (including my local Jeep friend) who like them on their Jeeps.
Toyo MT are spendy.
There are better tires for a Jeep, IMO.
Warning: I often edit my posts a few times to get them complete, or to correct errors.