They were ballooning alot actually, I'll have to get another video sometime, maybe with my Badlands when I get them. I dont think you can see it in the video that well but you can hear it. At 25 seconds to 29 seconds and at 36 seconds to 39 seconds and at 47 seconds to 50 seconds, that sound that is like a helicopters blades is the tires vibrating when they balloon, they only make that sound and that extreme when they start ballooning. And it's not just the fronts... I'd say at full speed all 4's have about 1 inch of ballooning. I know that it has to be going faster than mid 40's.
(See the attachment pictures)
But I do need a radar gun, I'd like to know just how fast it's really going.
EDIT: Also, screenshots of the video and speedcalc results, you can see the tires ballooning, fronts and rears, and here are the speed calc results with 1 inch of tire ballooning and nominal voltage (which is probably less than it actually is since I doubt those Turnigy 40C/50C batts have that much voltage drop (from 4.2 volts to 3.7 volts) on a full charge).
EDIT EDIT: Probably shouldn't bother with the speed crap anymore, I dont want to start anything with anyone about it, but I'd like to believe its going faster than low to mid 40's.