While I wait on my 812, got to thinkin.....I signed up for Daytona in January. Maybe it'll be here on time for that event, if not it'll be the swan song for my F12. I don't street my 991.1 GT3 RS any more now that I've bought a trailer. Slowly turning it into a track car. Besides exhaust/cage stuff, one of the suggestions from track guys has been to go to slicks and 19" wheels. The main benefit is not necessarily the grip from the slicks, but a huge down force increase from dropping the car 2" on the 19s. Anyone done so on an 812? The good thing is that unlike the RS, this is an easy change as the 812 has normal wheel hubs instead of the one hole centerlock on the RS. Anyone used slicks?