"Guest", who in heck are you? New or established forum member? (I dislike this Guest function; Internet is faceless enough already.)
I will respond anyway, this time: your post makes little sense, because you say that you've got plenty of tread left at 30K miles, but are "very discouraged"!? I've never heard of any staggered Michelin summer tires getting anywhere near 30K miles. So, I doubt seriously that you have "plenty of tread" still. These tires get noisier as they get more worn down. Chopping will occur on a heavily worn tire, regardless of driving style. (So I've been told by "my" tire guys.) You may think that you have "plenty of tread", but I'm not believing it. So, you're discouraged by the "noise inside". Time to get new tires.