yes slicks it will help keep the track smooth treaded tires will rip it up and put holes remember the biggest thing with flat kart racing is the track being smooth there is no suspension.
www.burrisracing.com check out the tires dirt tires out here you would wanna run 11 or 22s the way compounds work 11's are softest and 55s are hardest 44s and 55s are asphalt tires. 11 22 33 are all dirt tires
go to the burris tires then 6" slicks then u will the 4 sizes