Nobody in the websites listed is making any claims about the wear factor. I have no beef's with the performance of any of Stones that I've ran on my bikes, other than cost per mile. I'm planning on Darksiding this spring, just for grins and etc. If I like it, i'll likely continue the practice, if not so much, I'll be back to motorbike tires. I'm also in search of a little better ride that other Darksiders have been claiming to get. My 06 Burgie was'nt quite so bad, but my 07 Exec rides almost as poorly as a Sportster, meaning most anything would help.