They are pretty decent comp tires and HC gradually instead of falling off a cliff like R7s. I would use them but 255/40/17 square gives my Cayman PSM indigestion. I really need to run a double stagger with the rears 1" taller than the fronts. Much better tire choice in 18" for this car.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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