l'll give you impression after run both set cup and cup+, i'll run in mars with cup at dijon (a killertrack for your left outside tyre) and i have found a second set cup+ to try, maybe on my car for spa when first will be dead...
lucky, i will use
tyres during a meeting with a lot of
...
For cup, michelin explain you can re-cut them for wet conditions. hence, i'm not sure cup+ is specially design for wet or similar but sure design for porsche, a car with less weight on the front...
i don't know exactly how the result will be on my CSL, but one thing is that it's easier to find few used tyres. more, porsche wear out flat not only on the outside like our bmw.