Well, after a ride this morning where the farm roads are sheet ice, I found the limit of the Snow Studs – there's no centre studs and even with the pressure right down there wasn't much grip. So, I've put together some minimal DIY jobs anticipating the same at Puffer. Conti Gravity 2.3 tyres.
I marked the knobs with red marker pre-fitting, so they're easy to spot in the pictures below! I taped a screw to the drill and bore through from the outside-in onto a block of wood first, then from the inside-out through the holes. Clipped right down with Park wire cutters. Lined with Slime tyre liners.
I'll have a ride later but they seem good. I've no intention of going fast on these, so I'm not bothered about the lack of side-spikes. Only 22 per tyre, I'll probably double that if my test ride's encouraging.
Cheers, al.