Studded tyres on asphalt I'm curious is it possible to make a tyre that will fit perfectly on snowy/icy road. So I found studded tyres.
Now, my question is - Is it possible to make studded tyre that will have good grip on snowy/icy road/sidewalk and use same tyre for dry road/sidewalk?
Reason I want tyre with those specs is because I ride a bike in winter from house to work. Because it's too cold outside, I can't hold with traffic so I ride on sidewalk. Some sidewalks are clear, but on certain parts are ice or "compressed" snow. Without studded tyre it's not possible to brake or change direction. 
Where I should put screws in tyre? In middle or at sides of tyre?
You can use good quality ice tires with carbide studs on bare concrete or tarmac, without undue wear on the studs.