Tires...and floor
Well, we used to all run HPI advan A038 24mm carpet tires with tire sauce on them...BUT we also found that the sweep OG spec tires grip really well, actually traction rolling at times!
The gym floor is not wood with wax, it is a roll out plastic covering with 6mm foam "cushion" under it. The "pattern" makes it look like a traditional wood floor. This was rolled out and applied 5 years or so ago. Some nights the traction is like carpet, others it takes time to build up. I also run the floor scrubber on it before racing and clean up afterwards.
Never had a nick or rip due to the cars, only damage to the floor was from the family fun fair.
Thanks for posting the you tube for me
Eric