Anybody have thse yet? I'm currently running 35x12.5 Toyo MT's and will be stepping up to a 37x13.5 soon. I'm torn between running the Toyo or Swampers. I've read on other websites great reviews but my biggest concern is longevity. I have about 20K miles on my Toyos and they look like 60% or so tread so I could probably pull 50-60K miles out of them. Wondering if the SS could do the same?