In 8 years and about 6,000 winter miles, I have never had a flat with my Nokian W-106 tires. I'd consider that to be a pretty good performance and comparable to thaqt of many "flat resistant" tires. In fact, before I got my Marathon Plus tires, I toyed with the idea of riding year-round on the Nokians.

If you live in a flat area, running just a front studded tire might me a good efficiency tradeoff. Since I live on a hill, I pretty much have to use a studded tire in the rear.

Paul

Paul