Toyo A/T. I have consistently gotten 60k+ miles on each set. I am at 53k on my current set and should make it through winter.
My truck is a 7,000 lb. 2500HD crew cab with Duramax and has 155,000 miles. I removed the stock rims and tires and used them on a work truck and purchased a set of Coopers when the truck was new. I didn't make it to 35k with them. I believe Wildcats are the same or very similar to Cooper. I switched to Toyo and am on the tail end of the second set. That includes a large amount of towing 8-10k trailers and off highway use.