I thought it was a great episode. One of my friends is friends with Dion, the crew memeber from the 5, so it was neat to see him.
The tires actaully have more grip becuase they don't have grooves. Ideally, you want to have as much rubber on the road as possible to get maximum grip. Doesn't work for street cars becuase you have to be able to wick away rain, snow, etc.
The number of tires changes depends on the track and length of the race. The "lower" series, Truck and Nationwide, have set number of tires they can use each week (varies). Cup also has a limit, but it is so much higher it never comes into play.
I don't know what is done with the tires. All have to be returned to NASCAR/Goodyear. Some I believe are sold to racing schools and other groups. I would guess some are recycled.







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My boss is a big football fan and I always tell him it would be like him having to work during the Superbowl.
Gimme 11, just this once!

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