For the base coupe wheels (18x8 front, 18x9 rear) the lightest weight tires I have found are the Michelin Pilot Sport. This would save 14.2 for the front two and 18.6 for the back two (combined, not each tire) compared to the stock yokohamas.
My friend has the base roadster, same year, and he has bridgestone tires and also different wheels than my coupe. He does not have the sport package.
He appears to have the same calipers. I read that the stock calipers are cast iron. If so, does anyone know the savings to go from stock to aluminum calipers?
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