Have you checked the wheels for true? Steve just had one of the RX8 wheels on his 6 trued up for about 90 bucks. It was bent at the hub.My 15 SGT wobbles terrible, under very similar conditions. I don't drive it much so I kind of just deal with it but it makes me hate the car pretty passionately.
No updates to offer? I've never really pursued any corrective measures. Perhaps I should just leave it with a tire shop for a couple days.
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