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PORSCHE 911 GT3 R | USER MANUAL
ARB OUTER DIAMETER
The ARB (Anti-Roll Bar) size influences the stiffness of the rear suspension in roll, such as when navigating a corner. Increasing the
ARB size will increase the roll stiffness of the rear suspension, resulting in less body roll but increasing mechanical oversteer. This
can also cause the car to “take a set” more quickly at initial turn-in. Conversely, reducing the ARB size will soften the suspension in
roll, increasing body roll but decreasing mechanical oversteer. This can result in a less-responsive feel from the rear especially in
transient movements, but grip across the rear axle will increase. 2 configurations of ARB diameter are available; 35 mm (softest)
and 45 mm (stiffest).
DIFF PRELOAD
Diff preload is a static amount of locking force present within the differential and remains constant during both acceleration and
deceleration. Increasing diff preload will increase locking on both sides of the differential which will result in more understeer when
off throttle and more snap oversteer with aggressive throttle application. Increasing the diff preload will also smooth the transition
between on and off throttle behaviour as the differential locking force will never reach zero which can be helpful in reducing lift-off
oversteer and increasing driver confidence. Typically diff preload should be increased when there is noticeable loss in slow corner
exit drive and/or over-rotation during transition between the throttle and brake in low to mid speed corners.
PORSCHE 911 GT3 R | ADVANCED SETUP OPTIONS | CHASSIS
