Similar on our Mini Clubman. Front tyre walls near tread edge showing signs of cracks after three years and 25,000 miles. 225 ZV7 's fitted late last year with noticeable turn-in improvement although its was very good before.
I have a Mini Clubman from new fitted with 18" 225 Pirelli P7's. I do a lot of motorway driving and the rear tyres lasted 40,000 miles and still had 4mm of tread however my eagle eyed local garage spotted uneven wear which he said was the carcase distorting. You could hardly tell though and he said it wasnt an MOT fail but I changed it anyway.
The P7's have been excellent and although they are runflats the ride and noise is good too.
