I have a Cooper S with P7 cinturato [on Cone Spoke 18"] like your JCW...Since the beginning I noticed that the tyres weren't so good
Too noisy on bad roads (here in Italy bad roads are the "standard"
) and with a very low grip on wet
On dry, they have a good grip but the limit goes too early, so they start screaming
Moreover, I noticed that over 200 km/h the noisy is very annoying and the wheel, under my hands, hasn't a good feedback...I feel like the wheels would be squared
, not round...it's a bad feeling that, I'm sure, is caused by the "fantastic" Pirelli P7 Cinturato.
So, when I change, I think I'll mount the Dunlop Sport maxx rf that should be better than P7 Cinturato, and then, if they will not satisfy me, I'll mount the Michelin Pilot Super Sport that are the top at the moment. I mounted it on Scirocco R and they were fantastic!