Originally Posted by Richard@M-World
If you compare the weights (thermal capacity) of the front discs between the 380 and 365, you will find that they are actually very similar. Plus now you have less rotational inertia. I think the choice is pretty obvious.
Yes I run front only. Works very well.
Unsprung weight should also be lower. I still wonder why they put such huge disk at the back of the GTS. As far as I know, the E9x M3 has only problems with the front brakes. Sport brake pads are usually enough.