Same here with a '17 diesel with 18" non-runflats. Way, way more noisier than my previous "12 W221. And that one had 20". Sound comes through everywhere. The doorseals, doors itself, windows, enginesound, backdoors, tiresound. Strangely not at 100+ mph on the AB. Went to southern Germany this weekend and gave it the foot for 5hrs. Then its quite acceptable. But day to day busy traffic? Citytrips? Way too much noise. Didnt realise when testdriving it but really present after some months of ownership. Weird is though that if i put the soundvolume on max, there's NOTHING to hear outside the car. Nothing. Should be the other way around hé? If you mean active road noise compensation, i think its only on the W223 Maybach. Never heard of similar for the W222. The W222 has the 596 option and instead of the 840 option it doesnt have just tinted rear but extra insulated windows all around. Me personal am thinking of extra isolating the innerdoors when it goes for a audioupgrade, there are some fantastic products nowadays wich even outclass the factory stuff and specialized businesses who do every compartment you want. Costly yes, but maybe an option.