I talked to a friend at work to see what he had to say about it, he said that the struts and/or shocks are not meant to be fully extended for long peroids of time. I suppose since the suspension geometry changes when the cars in the air, maybe sits on some bushings different. I dont know the more I hear about this the more I think its a myth. But I guess if you go to a warehouse where the store high end cars, they're all sitting on the ground.