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


1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!