It occurred to me, and it wasn't brought up, can't tire rubber life be extended with a good rubber protectant applied every so often, like Aerospace 303 or something? It helps preserve our other rubber, plastic & vinyl parts like dash pads, seats, etc...so wouldn't that help protect tire rubber, at least on the sidewalls inside & out? Because at least in Canada, 75% - 80% of the year, your car is parked in a garage. Also, when cars are stored like this, is it better to store them jacked up on stands to prevent flat spots?