People who are new to track riding probably will not be riding hard enough to keep slicks up to their proper operating temperature. They are better off to start with street/sport DOT tires, which work over a wider temperature range (i.e. they start working at a lower temperature - and don't need tire warmers).
As your pace picks up and you start riding harder, street oriented tires will get to the point where they overheat and start sliding ... that's when it's time to have a friendly chat with the tire guy at the track about what to do next.
As your pace picks up and you start riding harder, street oriented tires will get to the point where they overheat and start sliding ... that's when it's time to have a friendly chat with the tire guy at the track about what to do next.