Michelin Pilot Sport Cup vs. Michelin Pilot Sport Cup+

BMW and Michelin have developed for the M3 CSL the Michelin Pilot Sport Cup tyre.
A few years later a more user-friendly version of this tyre has been created and has the name Pilot Sport Cup
The Cup+ version has different rubber and bigger grooves (less rubber but better on the wet).

Cup pattern

Cup+ pattern

Some images for both versions.