This table provides a guide to the effect of various components. It should only be seen as a guide The degree of change will vary and more importantly the ‘feel’ as each driver interperets it will vary.
|More to front||Weight Distribution||More to rear|
|More Understeer||Front Suspension Component||More Oversteer|
|Lower||Front Tyre Pressure||Higher|
|Stiffen (Thicker)||Front Ant roll Bar||Soften (Thinner)|
|Smaller||Front Tyre Width||Larger|
|Harder||Front Shock Setting||Softer|
|Toward Toe-In||Front Wheel Alignment||Toward Toe-Out|
|More Positive||Front Wheel Camber||More Negative|
|More Negative||Front Wheel Caster||More Positive|
|Heavier (stiffen)||Front Spring Rate||Lighter (soften)|
|More Understeer||Rear Suspension Component||More Oversteer|
|Higher||Rear Tyre Pressure||Lower|
|Soften (Thinner)||Rear Anti roll Bar||Stiffen (Thicker)|
|Larger||Rear Tyre Width||Smaller|
|Softer||Rear Shock Setting||Harder|
|Toward Toe-Out||Rear Wheel Alignment||Toward Toe-In|
|More Negative||Rear Wheel Camber||More Positive|
|Lighter (soften)||Rear Spring Rate||Heavier (stiffen)|
|Larger, more angle||Rear Spoiler||Smaller, or less angle|
|Straight line stability, slower to turn||Quick turn-in, nervous|
|Faster turns – more understeer desirable||chuckability – more oversteer desirable|
An example of how different people look for different thinks in this ‘feel’ can be illustrated by the following suggestions to roll bar settings for Spa.
Common roll bar setting for Spa tend to be (for a 964 RS) middle in the back (not full stiff) and full stiff at the front (or one off full stiff).
Though it is ultimately down to driving style, these settings are those used by most european regulars, for neutral behavior in the long curves, where most time is gained.
An alternative (from Paul Howells) will provide great turn in for slow to mid-speed corners but could be “interesting” in Pouhon, Blanchimont and Raidillon.
Paul’s Dry settings: rear full stiff,front ,one off full stiff,if understeering,soften front one more hole,with rear still on full stiff.
Paul’s Wet settings: Front full soft,rear full soft, or on the rear disconnect one side, will cause understeer at limit of grip, instead of oversteer, safer for a slippery track.,until you get used to your car etc