We nearly had a severe accident last week when one of the U bolts snapped and let the wheel fly back into the wheel arch. The tyre shredded, the rear end of the float was trashed on one side and buckled and the float and car could easily have flipped over! We had two big horses on and were travelling at 90kph. Apparently these bolts which hold the springs to the axle work loose often and will fatigue and break if not checked very regularly and replaced. Please go out and get the U bolts checked on your float asap if it's not something that you are already aware of. Ours is only 5 years old and always well serviced!