These tires typically have less than 30 laps on them (a day goes like this: practice (5 minutes), qualifying (5 laps) pre-final (8 laps) final (12 laps)). 

As this is a comeptitive sport, I change the tires after each race day for maximum performance - however the tires still have significant tread and use still available.  These tires are good for a few race weekends practice lapping. 

Please note some tires may have marker markings on them (I usually mark them to ensure I know which one of my children used which set). 

I have many of these tires available.  The shipping cost is for one tire.  Each additional tire has a small incremental cost of $3 canadian (less, of course, in USD).  I ship anywhere in Canada or the USA fast!

Any questions please ask.  Thanks!