Hmm thanks. I'll check the bolts when I mount the winter tires. I head a thump over a speed bump once and then tried to reproduce but couldn't so I ignored it. How can this be $1700 for two control arms? LOL what is it $200 + $1500 labour?
I wonder how the bolt "fails". Does it break? I've never heard of bolts breaking and these things are pretty darn big. Perhaps they come loose? I'll check mine out.