at first they test out the kuhmo ectsa red smoke tires and then they put a part on the brake pad and it causes it to spark... i have no idea why, what its for, maybe u guys can figure it out...
[yt]lU2WQLBMVOA[/yt]
[yt]lU2WQLBMVOA[/yt]
Last edited by a moderator: