I have. For WI trails I would shy away from them. They are more for rocky trail systems. For WI & MI take a look at the Grim Reaper & Black Diamonds. They do a awesome job.
I am currently doing an exhaustive search on what my next tires will be. The Roctane was one that appealed to me a lot for the Rocky Mtn's here in Colorado. I did lots of research reading from multiple forums and have decided to shy away from it. There has been many cases of them not holding air around the bead. STI would warranty this, but I don't want to deal with replacing something that is commonly defective.
I'm also interested in your review on the blackwater evo, wat size did u order?I bought rocktanes in Logan WV on a trip to hatfield. Punctured the front sidewall one the stock tire within 10 miles of WV trails. The fronts have held air fine. The rears do not. I had them both back to my local shop and had a double dose of bead sealer applied. At least now they do not go flat in one day. The leaks are a lot slower and are liveable to me. I bought new tires for my rzr 800 and I did not buy roctanes. I bought ITP blackwater evo's. As a side note on the rocktanes mine are 26 9 14s and the left tire tore out my led light assembly and I lost it on the trail. I am going to get a 1 inch spacers and the D2 fender extentions so I can replace the light and not worry about that happening again. I believe the spacers are cheaper than new wheels, 14 inch wheels are not cheap. Going to look into heaver springs also.
I bought rocktanes in Logan WV on a trip to hatfield. Punctured the front sidewall one the stock tire within 10 miles of WV trails. The fronts have held air fine. The rears do not. I had them both back to my local shop and had a double dose of bead sealer applied. At least now they do not go flat in one day. The leaks are a lot slower and are liveable to me. I bought new tires for my rzr 800 and I did not buy roctanes. I bought ITP blackwater evo's. As a side note on the rocktanes mine are 26 9 14s and the left tire tore out my led light assembly and I lost it on the trail. I am going to get a 1 inch spacers and the D2 fender extentions so I can replace the light and not worry about that happening again. I believe the spacers are cheaper than new wheels, 14 inch wheels are not cheap. Going to look into heaver springs also.