Probably stating the obvious here but I went for CSL replicas ( not on my Z4 ) just be careful of the weight of the wheels as they can be much heavier than originals . Hope you find what you are looking for .
My car came fitted with 19" CSL Reps that are exactly the same sizes and offsets as Genuine CSLs.
I've bought a set of 224s that I will be fitting once they've been refurbed and had new tyres fitted which is a bit lockdown dependant, but then my Reps will be going up for sale.
I've just fitted hyper silver csl reps from CM wheels on mine. Awesome value for money, the paint finish is a little questionable mind you but overall they're a great wheel.