Originally Posted by Jon Kerr

One thing that we hear a lot about any parts breaking is "I didn't hit anything" or "I didn't hit that hard" The problem is that there may have already been damage there from a previous hit that hadn't broken all the way. A cracked part may hold together enough that you wouldn't be able to tell but will break with the lightest hit or even just the load on it from driving. I've seen A-arms snap in mid corner before.