I think they look good on the S1 but not the S2. I think the mondeo 5 spokes look better on the S2.

The cossie wheels are wide, and stick out to much on the S2 IMO and look a bit crap, whereas the S1 has a wider kit on so the wheels dont stick out from the body. The mondeo's are not so wide and therefore do not stick out from the body on the S2.