[Chrislong]

Hi James,
The surface is a mixture of a very high grip astro, a low grip carpet (for carpet) and a concrete floor (not much of).

So the tyre to use tends to be Yellow Minipins. But partially worn ones are faster than new, and some people (me included) choose to run staggered ribs on the front of 2wd with Pins on the rear.

Minispikes also work very well.

Basically, so long as it is yellow compound and you have more grip on the rear than the front, it'll be fast. Its a great track. See you there!

Chris