im thinkin about maby getting a slash from traxxas what tires should i put on.

Depends on what your gonna do with it , we run them at a local track with stock tires on a clay oval ......we use some zip grip or paragon to soften up the tires .Some of the guys i run with say the proline tires dont have as much traction as the stock traxxas tires, all trial and error

Alot of tracks run a "box stock" class. That means you would have to run stock tires.

Are you going to race with it or just bash? Bashing, the stock tires still work pretty well for that!

Stock tires work fine. But if you wanna bash and have limited funds, go with the HPI Geolandars. They're cheap and grip fairly well on most all surfaces (especially grass and gravel).