One result for your search MERCEDES-BENZ C 350 CDI 4Matic Break 2012
3.0 CDI 231 225/40 R 18 92Y - 255/35 R 18 94Y You can mount non-OE marked tyres on your vehicle, but you should change all 4 tyres at the same time
All 4 tires should be changed at the same time on 4x4 vehicles