Kevin
The sheet metal screws don't need holes.
We used to use them on our dirt bikes when the lakes froze over.
They also just unscrew and back out if not wanted.
Regular studded tires will work better for road use though.
Don
I knew a guy who had a mini cooper (the old ones) that used sheet metal screws for ice racing tires. They were plugged into drilled holes with the points sticking out of the tread. Looked like porcupines there were so many.
I would think that the screwed in sheet metal screws would have more of a tendency to pop out, but they would probably be OK for temporary use. Studs get inserted with the head inside the hole, and even some of those come out of studded tires.
