These tires are for my wife's Porsche Cayenne Turbo. They are 295/35R21 with a speed rating higher than the Michelin's on my Panamara Turbo. That doesn't make sense to me as top speed on the Cayenne is in the 170's while the Panamara Turbo is close to 190. Having said that, they ride smooth, grip exceptionally well, and are a vast improvement over tires that came standard with the Cayenne.
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