Maybe 120 or so as a kid. My crazy friend in highschool used to jump his little Datson truck. There was a field across the way that had an enbankment which raised a good ten feet higher off the deck. He would do close to 30 or so before hitting it. He would rise, catch air, and land on two wheels (because of the engine wieght) . Fucker was nuts. Fun to watch, but no body would ride along.
Ever do crazy shit?