I have a set of these on my B-12. Seen them discussed on other forums, but not here, yet. I must admit I have limited experience to draw on, previous bikes (going back in time were Virago 750, Suzuki 550, Yamaha Maxim 700 -wanted to put drag bars on that one and pretend it was a sport bike...) and didnt really experiment with tires on any of them. Previous tires on B12 were stocks, whatever they were.
I like the tomahawks, overall. Price is real draw. That they can be had in colors is cool (although I chickened out and got black). I've read disses of them, but I felt like the rear felt the same as the stockers(what WERE those tires?) and the front corners fine, although I think I have noticed that the front tire seems to slide earlier on braking. Wear is good, too, so far, but too early to tell for sure so I won't put any mileage figures here yet. I did get the touring tires, next time I think I will go with the softer sport tires, and maybe get bold and go with red.