I can take the tight ones (there's some legal minimus raduis) at 55 with my Fuzions, 60 after the Aussie bar got a little weight off the front. And that's downhill: uphill is more, but I can't do it in 5th gear, so I just back off with oil starvation in mind. And yes, no squealing at all. I'd get an alignment. Oh, and go to a skidpad at a test-n-tune so you can calculate lateral Gs. Also: what size? I'm very anxious for these tires to die (I'm trying hard!) so that I can get the Z212. Reviews would be great: turn in, breakaway, heating, rain, etc. I've been following the miata.net thread (6 pages now...), but things can be different on lighter cars.