Originally Posted by swamp2
It is definitely true that some tracks favor a classic front engine/rear drive layout over a more powerful but heavier AWD such as the Audi. A couple of points worth mentioning. As we know the 335i does not have a LSD. On a tight track the LSD would have a substantial effect on the cars time. Porsche admitted a LSD on the Cayman would make it faster than a 911 on many tracks!
Comparing the E92 M3 to the 335i, just on the chassis side, we will get:
-much faster/better steering, feel and performance
-less unsprung weight due to an almost full aluminum suspension
-better brakes and brake cooling
-stiffer springs, more performance damping (+EDC as an option)
-stiffer chassis overall
-much higher performance tires
Not even mentioning the engine, these things alone will offer a huge lap time benefit for the M3 vs. the 335i's already impressive time/chassis. The 335i is a fantastic starting point for the M3!
Plus those almost flat torque band of the new V8 S65, making smooth transition coming in, during, and out of the corner, keeping the body stable and balance