You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
I am very satisfied with the turning radius on my P85+, since I came from a FWD car. I have some tight parking places to negotiate and I am a bit concerned about the turning radius on the AWD Model S. Do you think it necessarily will be larger?