Greetings from sunny Fort Lauderdale! I own a 2011 X535d with the sports suspension option and 20" Y-spoke wheels (style -214) and I am looking at non-runflat tire options to replace the OEM runflat Dunlops which are wearing out and getting extremely noisy. When I ordered the vehicle, I took the spare tire option in lieu of the 3rd seat. Since I live in South Florida, I am further inclined to go with high performance summer tires instead of all-weather options. I am looking for a combination of performance, ride and quietness. Would like suggestions/recommendations on brand, model deemed appropriate for this type of vehicle which are manufactured in the required sizes. Thank you in advance.