Just saw the post, I run:
38psi cold all around--- in orange county the roads are pretty good but if they were not, I might run 40psi...
2016 BMW M5 Alpine White
2016 AMG GTS Edition 1 Selenite Grey
2016 Porsche Turbo S Carrera White
2015 Lamborghini Huracan Bianco Canpus (Matte OEM)
2012 Mercedes Benz C63 AMG Black Series Obsidian Black