there will be as a result of chassis roll. A lower roll center will generally
produce more grip.
Roll-centers have an immediate effect on a car’s handling, whereas anti-
roll bars, shocks and springs require the car to roll before they produce
an effect.
Front Roll Center
Front roll center has most
effect on on-throttle steering
during mid-corner and corner
exit.
Lowered front roll center
(raising the upper arm mounts
- attening the arms)
• more on-throttle
steering
• car is less responsive
• better on smooth,
high grip tracks with
long fast corners
Raised front roll center (lowering the upper arm mounts - angling the
arms)
• less on-throttle steering
• car is more responsive
• use in high grip conditions to avoid traction rolling
• use on tracks with quick direction changes (chicanes)
Adjust the front roll center by changing the location of the shims under
and above the front upper arm mounts. To lower the front roll center,
put shims under the upper arm mount. To raise the front roll center,
remove shims from under the upper arm mount. Default (middle)
position is one 2mm shim under each mount position.
There are three front roll center positions: lowered - middle - raised.
Front Front Front
LOWERED
2 x 2 shims under
each mount position
MIDDLE (default)
1 x 2 shims under
each mount position
RAISED
no shims under
each mount position
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