I have a 2010 730D Sport fitted with 20 inch Goodyear RFT. My previous 7 series being 2001 735 Sport and a 2007 730d Sport had a great ride, handling and negligible road noise.
This ride on the current one is appalling by comparison. Lot of tyre roar particularly on poorer surfaces, harsh ride on broken surfaces and vibration transmitted through superstructure ie Chassis /bodywork on moderate bumps/irregularities. In short way below previous models and in my opinion most likely caused by RFTs. I am thinking of changing to "normal" quality tyres to improve ride.
Would really value other members comments/advice/experiences.