It's been reported a few times before. Body rubs seem to be the cause. Some tend to slide against the weather stripping more than others when getting in and out of the car I think. My 2011 looks brand new. The only thing that touches the weather seal is the door. I suppose icing in the winter could also cause a tear if an "ice glued" door is yanked open. To be on the safe side, I apply a rubber treatment before winter to help the rubber not stick to the door.