Wheels and Tires

Wheels/Tires

A new 19-inch wheel was developed exclusively for the new 911 Turbo. The characteristic features are its unique design, the forging technology used and its two-tone look. The forging technology used enables an optimum balance to be achieved between weight and strength combined with high dimensional stability.

NOTE: Extract from the Owner's Manual With PTM, the drive power is variably distributed to the front and rear wheels. Power distribution between the front and rear axles is realized with a map-controlled multiple-disc clutch. Distribution of the drive power depends among other things on the wheel speed difference between the two axles. The multiple-disc clutch always delivers sufficient drive power to the front wheels (0 to 100%) to ensure optimum propulsion even on an unfavorable road surface. In combination with Porsche Stability Management (PSM), PTM ensures optimum handling and high driving stability.

SAFETY:
Wheels and Tires
The PTM control unit is adjusted for the approved tire dimensions. The use of non-approved tires can lead to deviating wheel speeds and can affect the driving behavior or cause PTM to switch off.







A new tire generation with larger rolling circumferences has been developed for the new 911 Turbo (997) to complement the new wheels. The main goal of this new development was to achieve a significant increase in tire performance with respect to traction for acceleration, braking and lateral acceleration and to therefore reflect the sportier vehicle characteristics. The tire circumference has been increased by 2.5 % on the front axle and 5 % on the rear axle. The larger rolling circumference increases the sidewall height/tire width ratio in comparison with the previous model to guarantee an appropriate level of comfort despite the larger wheels. The wheel-speed difference resulting from the different rolling circumferences is compensated for by the different axle ratios of the rear (3.44:1) and front axles (3.33:1).

Track Width

In conjunction with the modified chassis and widened body at the rear, it was possible to increase the track on the new 911 Turbo (997) compared with the 911 Turbo (996) by 18 mm to 1,490 mm on the front axle and by 20 mm to 1,548 mm on the rear axle. In combination with the wider wheels (front axle) and wider tires (front and rear axles), these measures permit greater roll stability and a higher lateral acceleration potential. The end result is even sportier performance with higher maximum possible cornering speeds and enhanced active safety.

Tire Repair System

Like the current 911 Carrera (997) generation, the new 911 Turbo is also provided with a tire repair system.