Hi All, I currently have a MS75 RWD with 21's staggered , air suspension, and currently running the factory Continental tires, and due for replacements. I have approximately 24k miles on these and they have been good tires, but I wanted to compare these to the Michelin Pilots that come standard on the P100D. A couple questions here: 1. Does this fall into the average lifespan of the 21's and can I expect more/less from the Michelins? 2. Which are quieter? Michelin or Continental? Others? 3. If you had the choice to do either, which would you choose? Financial difference aside. 4. Are there others that are better options for the Model S? Thanks!