The difference between slicks and dry-weather tyres is, of course, the tread. Slicks don’t have any, which makes them no good in the wet because there’s no run-off like there is on a treaded tyre. On a treaded tyre the water goes through the grooves, allowing the tyre to grip the road and give you a more stable ride, whereas on a slick the water has nowhere to go. It just sits there on the flat surface and you either spin or you’re forced to go at a snail’s pace because you’ve got no grip and don’t want to spin.
