As most of us live in a country where Winters are not obligatory, nor really necessary unless we live out in the sticks, the wheels VW supply suit most of us all year round, so they're meant to do UK Winters too. Diamond cuts are simply not up to the job of looking good for the duration of the warranty, let alone the life of the car, without scrapes. If I keep our Polo GTI+ long term and we get whiteworm out of warranty (or even within warranty if VW refuse to pay out), they'll probably get coated in the same silver as the R's Prets - Refurb guy had to order a minimum 500ml paint when I got a Pret scraped by the missus - so I have 4 wheels's worth of paint being stored on my behalf!