At first I thought that this would be an obvious thing but then I realized some of the DIY's on this site and how some people are just less experienced. So I took an extra pair of my Maxxis Razr Radials (usually a dirt tire) and converted them into a more ice and snow approriate tire. I used some 3/4" self tapping roofing screws that you can pick up at any local hardware store. I decided to use a ? volt hand drill of unknown origin. Lol I then took and drilled 1 screw (at First) into the outer rectangle tread. Then as I went I added more to meet my needs and satisfactions. In the end I had changed normal dirt track tires into a pair of mean looking, aggresively treaded (yet still cheap) ice and snow tires. Feel free to ask questions and I will answer then as quickly and accurately as possible. In hind sight, I would probably use smaller screws such as a 1/2 inch of the same type. Just remember that you will need a decent amount of screws to do both tires. Hope this helps. =]