Had a similar sensation with a set of Blizzak MZ-01s....I referred to them as "big greasy donuts", that`s pretty much what they felt like. Anything over 70 mph imparted a VERY "nervous" feeling to the suspension, as if complete loss of control was imminent and you were about to slide right off the road. They never got any better with wear, so I replaced them with Dunlop Wintersport M3s, which were the complete opposite of the Blizzaks. The M3s do everything right, and are rock-steady at highway speeds, even at triple-digits....
The road goes ever onward....
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