45NRTH Dillinger 4 Folding Tire, 26x4.0", 100-559, 240 Karbid Studs, 60TPI, Tubeless Ready

The Dillinger is easy to fit. It is good-natured on snow and shines on ice. The weight is good for a fat spike. The high rolling resistance in the lab is surprising because it feels lighter in practice. Many variants. Expensive!