Originally Posted by J Tyler
Ambient temp has a huge affect on lap time in stock street cars, especially big heavy turbo BMWs on runflats! After watching your video I think you can do 2:08 on a cool day and a tidy lap. A hot day vs cool day can be 2-3 seconds at that track in a 335i. (More like 1-2s in an S2000/Miata as they are much lighter and non-turbo).
Sorry to bring an old thread up. But I was just too excited that I had to share.
I did it, I finally did a 2:08 lap in my mostly stock E92 335i. The cooler ambient temp really helped as I didn't feel power loss at all, and I was able to put more laps continuously. Anyway, here's the video of my 2:08.55 lap from this past Friday.