people do think, thats why we realized that, rear tires wear more often, yeah, so whats the difference, they can replace the whole rim and tire, but why does it have to be a different rim, because they didnt have any? i kinda doubt that. Secondly, those arent almost as if to say paparazzi photos, those are photos taken by a professional, and the car is stopped, do you really think they would have different rims on during a photo? and thirdly, yes it is quicker to change the whole rim, they arent in a real race, they are just doing testing probably, and for testing purposes, im sure they can cut out the pit stop time