Very respectable tires, with the main negative being that it is necessary to move off of ice or snow onto clean asphalt in order to silence the howling sound. Aside from that, I do not have the slightest remorse about making the purchase. Some pros: Stroking at a rate of one hundred. On rolled snow, in powder, and in snow porridge, it carries with a high degree of assurance. Although I do not feel very confident on the ice, this is not a combat spike. Having these drawbacks: On smooth asphalt, it makes a sound similar to that of an airplane. Even more obnoxious than an amtel that has been spiked.