Sorry for the slow response, I now have about 8K miles on my Rockers, about 1/4 of an inch has worn off but it seems to be slowing for now, the first 1/4 always seems to wear off the fastest, My suggestion would be to rotate them at lease every 2k miles for the first 8-10k as the front tires cup slightly. I think I might get 30-35k out of them, they told me that they should last 40-45k,
the one impressive thing about these tires is that they are not that loud, everyone that stops me to ask about them always thinks they would be loud, the tires have a kind of buzz to them, they are definitely not like Nitto Muds or Swampers, I have run all kinds of tires before and these are much more tolerable than the fore mentioned, I actually think they have gotten smoother and quieter as they get some miles on them. My buddies Toyo MTs with a bit of cupping are much louder than the Rockers.
I will say that these tires are the best I have ever ran off road, they just grab like a Paddle tire!

I recommend them but keep in mind the sizes run true, I just mounted a set of TOYO MT 37X20's for a guy and my tires with 8k on them stand exactly the same as the new TOYOs.

Thanks for being patient with me and feel free to ask more questions, I just dont know how fast I will get back!