Schwalbe Snow Studs
I had a pair of the Schwalbe Snow Studs and they did not perform well. I had problems with the wire bead (separated from the tire) and the tire not staying on the rim. I now use the Schwalbe Ice Spikers and have had a good performance on black ice, packed snow, and clear road. Stay away from the Snow Studs. No info on the Marathons...