[S18adeli]

I'm looking for the most appropriate coilover kit for my Z4M Coupe that is designated for track driving. It's rarely driven on the street and if it is, its usually on canyons or spirited drives. Ride comfort and noise are not considerations. Just looking for optimal performance.

I've read many threads comparing various coilovers for the Z4M Coupe however I was curious to hear opinions of comparison between the Ground Control (GC) and JRZ coilovers ideally from those that have experience with both.

OR comment if you believe another brand is better for the track and why, also how it compares to the above mentioned brands...

Thanks