I can't find too much detail yet but I rather like the look of the KR5.

Specs;
K5R 15 inch
15 x 7.0J - 5.25kg (11.57lb)
15 x 8.0J - 5.61kg (12.37lb)
Here's what the KR8 looks like.

Specs;
K8R 15 inch
15 x 7.0J - 5.18kg (11.42lb)
15 x 8.0J - 5.49kg (12.10lb)
15 x 9.0J - 5.91kg (13.03lb)
Colours will be 'Street Silver' & 'Fine Silver' so far....
https://www.facebook.com/koseiwheels/ph ... =3&theater