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I have a 2013 Boxster. The original 18x45 Dunlops were poor handling and wearing out after 25,000 miles and 5 years. I replaced them with Michelin Sport 4S but in 40 aspect since 45 is not made.
Now my car feels like a new great sports car, especially in handling, cornering (no more skids), and noise. I have calculated my milage and speed are off 3-4%.
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