Originally Posted by Erhan
Agreed with others. I once placed my iPhone in a way I can see the timing, and I imminently realized how distracting it is.
Record your times, but in a way that you can't see them during your session. The reason why I say record your times is to have a general idea about your progress.
Totally agree. I use Harry's lap timer and it's mounted on the passenger side so I don't look at it until the session is over. I ran Thill in reverse and ran 2:26. It was my first track day in my M3. My friends were running 2:08. I didn't care as it was my first time on a track in my precious.
I had a great time and was able to drive home without any damages.