So, what is the verdict? Home made studs ($0.50 ea) using 18-8 SS sheet metal screws- #14 hex washer type, Maxigrips ($1.10 ea) or tire chains (about $250/pair, on EBAY)? I have brand new R4 tires, and don't want to tear them up, particularly.
I hope to put regular car chains on the front.