I just finished studding my tires for when I hit a ice patch on an out sloped road. Spring time is when it's the worst for ice , but hopefully I'm set. These are screw in studs and a electric drill works great for installing them. I don't know know yet how well they will stay in, but I will keep you posted especially if they start coming out. I bought 200 studs on e-bay for $50 and socket to screw them in with for $4.95
I agree Ice studs work were needed, I use to use the screw in type ( yes ruined tires but traction was unreal) however old age don't see the need anymore.