Hello, I drive a Mercedes CLS 350 with the following tyres: Conti Sport Contact 2 front: 245 / 40 R 18, 93 Y rear: 275 / 35 R 18, 95 Y …live in Münsterland…… should mean little snow and so on. …drive p.a. only 4500 kilometers …of which in the winter months max. 1500 kilometers The effort 2 x tire change in the year is so great for me in the above mentioned conditions. Since I can not find all-year tires in the above sizes my question: Isn’t there the size? Can you also 2 at the rear instead of 275 45 he use, asked in a layman’s way with distance discs or how does that work???? (I would rather make me smart here before I go to the tyre trade. )