[ChuckBimmer]

Originally Posted by Chowbow

I would think the 335xi would get some of the best stock (and tuned) 1320 times. Given that somebody is willing to launch that sucker hard out of the hole and pull in a low 1.8x or high 1.7x 60' and powershift the car, I could see a 12.9x for sure.

I agree with you the xi should be able to have faster 1/4 times. Even though the xi is ~200 lbs heavier it has the advantage because it can launch harder due to the better traction (4 wheels vs 1 wheel). Plus, the 60/40 split and transitioning to RWD at 100mph takes aways some of the drivetrain loss as it picks up speed. However, over 100mph I think there is a disadvantage but by this time the 1/4 mile is almost over. Just my 0.02 cents.