Bad influence...that and more! I did already get to experience the doors and they have less rattles than the steel doors believe it or not. The fitment is quite nice where you can toss them right on using all the factory hardware even the air bags.You are a bad influence, I am now looking at carbon doors for M3.
Let me know how the doors turn out. Fit, finish, noise, vibrations, etc. What weight are you aiming for once the mods are done?