If you go a few pages back you can find some discussion on the tires. The tire is a new rule and some tracks will be going by older rules until the tires that their racers have dry up a little more. So you are not commited to them YET.. But since you are new going in and you don't have a stockpile of tires, I think you should just buy the tires that are shown in the link posted by MoparSRT. They are great performers and are super inexpensive compared to some of the other options.