Hammer Burris Base is design to slightly soft and add more bite when needed. Ideally suited for use in heavier wet tracks as a weekly prep. Apply 3-4 coats early in the week prior to race day and allow to cure in the tire, use Burris Fire as a PRW.
Hammer Burris Fire is designed to do exactly that, Fire off the tire. Apply 1 - 2 coats before heading to the grid.
For heavier wet tracks use Hammer Burris Base as a weekly prep to add more bite and depth to the tire.