I've only had one spring snap on me (not the Bongo) and it looked in good condition externally, but I think the powder coating was damaged and whether that allowed water to get in I'll never know. Fortunately, it happened just as I turned the wheel to get out of a parking space and the was a loud bang. The sharp broken edge was in contact with the wheel so it could have been nasty if it had happened at speed.
I was not in a position to fit new springs, so I was going to have to drive it a few miles to my local mechanic. I jacked the car up, chopped the spring off with an angle grinder and then discovered that with no spring in place, there was no way I could drive it as the wheel hit the top of the arch once the jack was lowered

. Managed to bodge it with a length of steel tubing split up the side to pass over the shocker and lock it in place. Bit of gaffer tape and a jubilee clip and it was just enough to get to the garage very slowly. Not pretty, but it did the job.
Just to add to the problem, numpties at CarPartsForLess couldn't manage simple of job of sending me a pair of springs that were the same length as each other.
