DIY RC Car Tires - Mini-B Slicks

I'm running my Mini-B on slicks I made using a 40A urethane rubber resin.
Mini-B Slick Tire Mold: www.thingivers...

[@rblack110]

How wide is the track? I'm thinking of trying to create one in my basement for 4 cars at a time and I'm not sure how wide I should make it. I was considering 36".

[@nick_cnc]

Honestly I don't know, but it was certainly bigger that 36". It was at least 48", maybe bigger?