From experience, the Duratracs ARE squirmy for the first 12k miles or so. Try dropping the pressure a little after you get some miles on them.I tried 40 and found it too squirmy for me so I went back to 45. 16,000+ miles later, I dont have any abnormal tire wear and I dont think it rides rough
ewI believe I'm at 38 right now. But I've only got maybe 50-60 miles on them so far. Initially it just seemed a little bit harsh over some small bumps in pavement.
ew
Maybe its not your tires. It might be time for new shocks. I have found that my 3 is one of the best rides I have ever had. Even w/ 315s