Well I replaced all my front control arms in July during the coilover installed, but sadly two have already failed. The lower front control arms ball joints started making a really back metal scraping noise when I turned the steering wheel. The sound was so bad that I scared a few people while driving in a parking lot.
The best part is when we put my car up on a lift you could lift the tire up about 1/2 of a inch because there was that much play in the ball joint.
So, me and my friend Erik got those replaced in a couple of hours. Followed by a alignment at Firestone, and I was back on the road.