With 61 horsepower more than the car it replaced, the latest Porsche 911 Turbo S is the most powerful factory 911 ever built. The twin-turbo hybrid sports car is also nearly 200 pounds heavier than the previous car. How did Porsche manage to give it the traction and cornering ability to master that newfound power and weight and still feel like a Porsche? With some help from its Italian friends at Pirelli, in the form of a new tire.
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