Guys,   Fitted 4 of these to a colleague's Golf GTE on 1st December. Changed back to summers today as he wasn't happy with grip, and had a few moments; went to tyre centre to collect the car and they had discovered all four have badly cracked sidewalls     He's done 13,000 miles since they were fitted (yes, that's over 1k miles a week) but they still have 6mm left as measured by the tyre place, so at least they wear well!    The pressures have been a consistent 35ps