Interesting comparison here of the mid-engine Porsche Cayman R and the rear-engine Porsche 911 GT3.
These road warriors are the ultimate examples of their respective 987/997 breeds. A seventh-generation 911, which will beget a new, third-generation Boxster/Cayman, is scheduled to bow at this fall’s Frankfurt auto show. To compile the evidence that would convincingly prove which engine location works better, we dug deeply into our box of tools.
Cayman Dynamics, a team of vehicle-dynamics experts on call to support our more ambitious tests, cracked the door to a local laboratory where a million-dollar test rig measured each Porsche’s center-of-gravity height and polar moment of inertia.
Supplementing the normal acceleration, braking, and cornering tests, we lapped the Chrysler Proving Grounds road circuit where the Dodge Viper’s fangs were sharpened. All our tests were run with stability control disabled.
To measure agility and predictability at the ragged edge of adhesion, we reconfigured the classic slalom test and cooked up a new step-steering-input maneuver.