Well for the dirtbikes, Jeff Fredette knows his shit!!!!
http://www.frpoffroad.com/
Pricey for "dirtbike tires" but SO WELL WORTH THE MONEY!!!! There's also a guy named Andy Fenwick in northern WI that does a great job studding too. Hawker has his info though. There is an art to this ice tire business..you wanna stick? Go to these guys and you will stick!!!! Fast service, reliable, excellent customer service and incredible product!!! In fact I did my one and only "stoppie" on the ice with Fredette's tire on the front of my YZ80....call them when the time comes. you won't be disappointed, I promise...Maybe they can get your streetbike to stick too...it's worth the time to talk to them.