Thanks guys!
It'll be 225/40 R18 Michelin PS2 then!
All I need to do is figure out what the damn abbreviations mean, that the site that I order tyres from puts after tyre names, like:
Michelin Pilot SPORT PS2
225/40 ZR18 92Y EL mit Felgenschutzleiste, M0, RR *
WHat is M0, RR, N2, N3, RRBL...