Suspension Basics
Corner entry understeer
*Increase front compression.
*Increase front toe-out.
Corner entry oversteer
*Increase rear rebound.
*Reduce rear ride-height.
Steady state understeer (All turns or low-speed turns only)
*If front tire temps are optimum and rears are low, stiffen rear anti-roll bar; if front temps are too hot, soften front (most likely).
*If front tire pressures are optimum, decrease rear tire pressure. Increase if chunking occurs.
*Improper front camber.
*Too much body roll at front, causing excessive camber change.
Steady state under steer (High-speed turns only)
*If front tire temps are OK, increase front down force
*If front tire temps are too hot, reduce rear down force
Steady state over steer (All turns or low-speed turns only)
*If rear tire temps are optimum with fronts too low, stiffen front anti-roll bar; if rear temps too hot, soften rear anti-roll bar (most likely).
*If rear tire pressures are optimum, decrease front tire pressure. Increase if chunking occurs.
*Improper rear camber.
Steady state oversteer (High-speed turns only)
*If rear tire temps are OK, increase rear down force.
*If rear tire temps are too hot, reduce front down force.
Corner exit understeer
*Increase rear compression dampening.
*Reduce front rebound dampening.
Corner exit oversteer
*Increase rear rebound dampening.
*Reduce rear toe-in, no rear toe-out.
Straightline instability
*Tire pressure is too low in one or more tires.
*Increase positive front caster.
*Reduce front toe-in, no toe-out in rear.
Straightline speed too slow
*Reduce overall down force.
*Too much toe-in or toe-out, reduce.
*Lower ride height.
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