Replaced the OEM supplied P215/50R18 Yokohama Avid S34s with Michelin Pilot Sport AS3 P225/45R18s. Quieter, more dry an wet grip and overall worth the investment. My local tire shop gave me $75 each trade-in for the Yokos and the shop was running a $100 rebate on the Michelins. I also use AS3s on my Miata during the cooler months as the Pilot Super Sport summer tires turn into traction losing hockey pucks below 50 degrees. Probably the best initial change one can make... Get good tires!