Upon inquiring about Ziex replacement tires for my ’04 Prius, my local tire dealer said, “Oh, no! Please don’t say Ziex 512! I can’t tell you how many of those I’ve had to take back because people complain about poor performance on wet roads.” He suggested the Michelin HydroEdge instead (at a significantly higher price). He brushed off the Consumer Reports tests and stopped just short of suggesting that wacky weed was involved, because his customers’ real world experience has been very different. I’d love to hear from Ziex tire owners (Prius or otherwise) with their Ziex experience. If we can’t depend on independent testing like CU’s, then woe is us.