Its in japanese so just turn the volume off 
But, it was pretty entertaining to watch, espeicially the end.
Holy crap!
It would have been cool if they weighted them equally to just show the velocities as a funtcion of purely rolling resistance.
But then again that would not account for energy losses through side wall flex.
Oh enough of your physics.
The ones that go the farthest track the straightest with the least wobble.
It would be sweet to see some little jap in the last tire take a ride.
It was all weight based if you look at the bottom is shows the weight in kilos, the last one was 220 kilos. I love how it broke everything.