Thanks Will, strange they are shown in Europe as I thought it was the United States only that got the 18" versions, I just had a quick look on Michelin USA and low and behold.. both 245/40 and 255/35 PS4S are available for 18" fitment..
Question is, how to get them!
oh, there's plenty of services that you can ship to in the USA, and they'll forward them to the UK - likely to charge full import tax & duties though.
Try this for a search listI've used MyUS.com - until they opened a 40 year old art book's seal and then tried to charge me 20% vat (it's 5% on art, mostly 0% on books) but they'd destroyed the value of the book by breaking the seal... Not a problem you'd have with tyres!
Will