They are doing well. I've tested Michelin Energy Savers, Dunlop LM703 and Yokohama dB previously. Amongst them, Yokohama were very nice but with fuel economy decreased slightly. Then I tried out the Direzza on my previous GLi. Well, by the time Viper came, I pretty much knew what to choose. It was Dunlop Direzza again. A very balanced tyre. Every tyre has a strong selling point but then it will lack in another two where some other tyre will exceed. Like silence wise dB might be the name but for precision handling and performance oriented, Pirellis step in. Selecting the right tyre and specially the right profile is not a simple task specially when you want to strike a balance somewhere.