I sold the OEM Potenza RE-050A from my brand-new 2014 here on this forum.
I bought a set of Potenza S-04s online from the Tire Rack to replace them because of their substantially better wear rating, better wet traction and lower tendency to hydroplane. My first pick would have been the Michelin Super Sports, but they were $1200 for the set. The S-04s were $800 and only slightly lower rated. IMHO, it was money well-spent.