My 04 was less than 6 months old when a coworker told me that my tail light was hanging out. I called the dealer and ordered a new one. When I took it in, I knew the service writer (knew more about my GF's car than his mechanics) and he looked at it. Said he has seen it before, and would replace it under warranty. His mechanic did the repair while the truck was under the cover. We pulled the other side and found it cracked. Since neither had marks on them he warrantied both. He ordered the other side, and about a week later went in to have it replaced. When I pulled it out, it was not broke completely, so my finger brushed it and it became 2 pcs. Looked like the factory pushed too hard when putting the screws in and broke the tab.
For racing if you think that the frame torque is breaking them, just remove it before your runs down the track.
