A recent run in with a BMW dealer allows me to make a useful how to:
Replica CSL's have all the correct codes on the front, even the BMW part number. But they're missing "BMW" embossed between the M logo and the centre:
On the back of genuine CSL's you will find the BBS logo:
The centre of the genuine wheel has recesses between the bolt holes:
and the replica does not:
More pics of the back of replicas:
Replica CSL's have all the correct codes on the front, even the BMW part number. But they're missing "BMW" embossed between the M logo and the centre:

On the back of genuine CSL's you will find the BBS logo:

The centre of the genuine wheel has recesses between the bolt holes:

and the replica does not:

More pics of the back of replicas:





