first time I broke mine I t-boned a curb so hard the tank came off but the bottom of the tank stayed on the car, 2nd time I was running pretty hard without my body on, and going around a corner in the inside of a tree. It flipped up on 2 wheels, and hit right on the side of the tank. this wasnt on a smartech, but I found a tank close to the same size and had to drill new mounting holes.