The science behind tires! What’s in them, rubber, nylon, even steel. Bart talks about vulcanization, polymers, radials and more. What’s better, synthetic or natural? And what’s IN your tires… to find out, Bart does burnouts with 2 different kinds of rubber, and… he cuts open a tire with a chainsaw! A friggin chainsaw! It’s fun and informative- it’s Science Garage!