I would like some input on the pros and cons of the 21 inch tires and wheels vs the 19's. I have not driven the model s with 21's except when I did my original test drive in January. I was so excited at that time did not really pay attention to the ride. When I configured my car I went with the practical knowing the problems with curb rash and tire wear. But I really like the way the 21's fill the wheel well, and still have this little bird in my head saying who cares about practicality go with you gut. So any input on the noise, ride quality, mileage issues tire wear would be appreciated.