Picked up my first ever Merc @ the weekend. C Class W204 facelift 2.1 C220 CDI BlueEFFICIENCY AMG Sport Plus 7G-Tronic Plus 4dr (Map Pilot) (12 - 13) Really pleased with it (Audi last car) Still getting used to the parking brake though. Another problem I didn't notice when I paid (privately) was the crack in the headlight, and now, after heavy rain last night the ballast needs changing (and sealing the lens). But I'm here today to try and confirm the tyre size combo & pressures. Front = 225/40 18; Rear = 255/35 18 The filler cap shows Front @ 33 psi & rear @ 45 psi. Should I have mixed sizes, and if so, are the filler cap pressure correct? Thanks all in advance, Mike.