I took some pictures of my new Cooper Discoverer STT Pro tires next to my Kanati Trail Hogs. The STT's are 37x13.5r17 and the Trail Hogs are 37x12.5r17 so the STT's should be a bit wider. The Trail Hogs have about 30,000 miles on them when the pictures was taken.

Specifications:

 Tire Size Weight Outside Diameter Tread Depth
Cooper Discoverer STT Pro 37x13.5R17LT 84 lbs 36.77" 22/32"
Kanati Trail Hog A/T 37x12.5R17LT 72.3 lbs 36.7" 18/32"


Specs per http://www.kanatitires.com/products/truck-tires/trail-hog/ and http://us.coopertire.com/tires/discoverer-stt-pro.aspx

Both of these tires can be had for under $300 so they are very affordable for a 37" tire.

Cooper Discoverer STT Pros at Amazon
Kanati Trail Hogs at Amazon

discoverer stt pro v kanati trail hog 1

The STT's are 13.5 width and the Trail Hogs are 12.5 so the STT's should be a bit wider.

discoverer stt pro v kanati trail hog 2

discoverer stt pro v kanati trail hog tread

The Cooper STT Pro tires are more aggressive than the all-terrain Kanati Trail Hog, as you would expect. This is most notable in the spacing between the middle tread lugs. I think the Kanati Mud Hog would have a more comparable tread.

discoverer stt pro v kanati trail hog width

Above you can see the difference between the 13.5 width Cooper and the 12.5 width Kanati.

discoverer stt pro v kenati trail hog side biters

The side biters on the Cooper STT Pro's are very thick, almost rediculously so. The air'd down traction should be excellent.

discoverer stt pro label

discoverer stt pro made in usa

The best part is the Cooper STT Pro is made in the USA!