slicks have the best traction on the track, when doing a burnout you are heating the whole contact surface of the tire therfore full surface contact with a stickty tire=traction, a tire with tread is said to have more traction in street and offroad applications, not racing, on the street you are dealing with debris,oils rain snow and things of that sort. in this case you need tread to grab on to these elements. and for rain tread actually on some tires is made to channel the water away from the center of the tire. same thing with off road vechicles with big knobby tires, they use those tires for aggressive traction. a drag radial has the best of both worlds you have some tread which makes it handle some road debis and wetness, and has a large area of flat surface for racing purposes. i hope this has helped you with your questions.
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