You are allowed to use whatever you like in Club racing. Its when your racing the nationals (production bike classes) that you must run DOT approved tyres.
Places like the Winter series, Street series etc you can use either.
Most 600 riders will use the treaded tyres as that is the tyre they will use in the nationals. There wouldnt be any point testing/setting your bike up on slicks when your not allowed to use them in some classes.
The treaded tyres grip like shit to a blanket anyway.
Bookmarks