The pilot stated that he executed an ILS approach to runway 32 at about 120 knots, and touched down on the first quarter of the runway at about 100 knots. During landing, he noticed that the runway was wet, so he avoided using heavy wheel braking and, "primarily used aerodynamic braking." He further stated that past the midfield point, "the airplane still had a lot more momentum to bleed off", so he could either press firmly on the wheel brakes possibly causing him to hydroplane, or attempt a go-around. With one quarter of the runway left, he performed a go-around, climbed to approximately 50 feet, and noticed that the airplane was not climbing. He aborted the go-around and landed on grass past the departure end of the runway. While on the grass, the airplane veered sideways causing the left main gear to collapse. He also reported there was "no malfunctioning of the brakes", and "no malfunction of the airplane during the go around."