The current F1 rulebook has limited certain areas of car improvement: a 10-year freeze on engine development is in place, Bridgestone tires are standard issue to every team and testing in season is restricted.

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Sony recently filed a complaint against Bridgestone Tires over an advertisement featuring the same actor, allegedly portraying Kevin Butler as a Bridgestone employee, endorsing its tire products and a promotional program featuring the competing Nintendo Wii game system.

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Bridgestone says that Ecopia tires (as seen on the Nissan Leaf) improve rolling resistance 36 percent, which means a 4 percent fuel economy improvement (5 percent for Dueler truck tires).

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An investor would've been better off buying Bridgestone stock the day before the first story connecting its Firestone tires to rollover accidents.

FORBES: Magazine Article

An investor would have been better off buying Bridgestone stock the day before the first story connecting its Firestone tires to rollover accidents.

FORBES: Blowout!