UPDATE: Yes, I know the 135i doesn't have a "V" 6. But I'm too lazy to go back and edit that. :-)
The video is long. Probably only interesting if you're really into track driving, interested in the 135i or M3, or in seeing what Chuckwalla looks like.
Spoiler: I caught him, but couldn't really pass him. There was only about 2 times where I actually had to "lift" (stop accelerating) because I was really close (closer than it looks with the wide angle view). Then again, there were times where he pulled way ahead of me. Overall, these cars were pretty evenly matched and aside from our exits out of the bowl, we were holding pretty similar lines on the track. I think if he had wider/softer tires it would have been a slightly different story. I would like to do this again with both of us on R-comps. Both of us could have used some more grip. Then again, when could you NOT use more grip?