[Lambobimmer]

So I've had my 2009 Z4 35i for about 2 months now and I am learning what is normal and what is not. Before I bought the car the warranty information indicated that the DCT was leaking and fixed at 33,xxx. I am not sure what exactly they fixed, only that they fixed a leaky DCT. After I bought the car I felt like it was still leaking and my dealer replaced the gasket on the mechatronics unit. It appears that this has fixed the leak but I am not sure what is normal noise for the DCT tranny.

It sounds very loud to me, almost like a roaring noise. It is difficult for me to determine if the noise that I am hearing is the transmission or the awful Kuhmo Ecsta Spt tires that are currently on it. I am coming from a 135i
6MT that had very little drivetrain noise so I am concerned that something else might be wrong with the DCT.

I would like to hear from other DCT owners about what normal is for this transmission.

I have no complaint about how it shifts. It seems to shift great and fast.

Mods are:
HFP FMIC
KW V3
AR DP's
Milltek Exhaust