its imposible, i tried and you crash with the sign
Please relearn basics on stunting before someone mushroom slaps you...
No need for RAD or FL off, infact it doesn't even make a difference. Since you won't get to the 4th gear before hitting the bump lol. The difference would be so insignifigant, bah I won't even bother. It is possible my best is 83ft and hit the wall and the roof is easily landable with a 96ft bump. The 83ft wasn't a one time thing either because I didn't even go off it properly.
Eddeman hit me up on msn when you start trying this.