TERMS

Understeer : Condition when front of car loses traction and has a tendeny to plow straight through the corner.

Oversteer : Condition when rear of car loses traction and the rear end tried to come around. Car also feels like it will spin out. Very difficult to control compared to understeer.

	Possible Adjustment and Modifications to Evaluate	To Reduce Understeer or Increase Oversteer	To Reduce Oversteer or Increase Understeer
Tires	Front inflation pressure	Increase (2.5 psi increments)	Reduce (2.5 psi increments)
	Rear inflation pressure	Reduce (2.5 psi increments)	Increase (2.5 psi increments)
	Front section width	Increase section width	Reduce section width
	Rear section width	Reduce section width	Increase section width
	Front aspect ratio	Lower aspect ratio	Install higher aspect ratio
	Rear aspect ratio	Install higher aspect ratio	Lower aspect ratio
	Front tread depth	Reduce	Increase
	Rear tread depth	Increase	Reduce
Wheels	Front wheel width	Wider	Narrower
	Rear wheel width	Narrower	Wider
	Front wheel weight	Lighter	Heavier
	Rear wheel weight	Heavier	Lighter
Alignment Settings	Front wheel Camber	More Negative	More positive
	Front wheel caster	More positive	More negative
	Front wheel toe	Toward toe-out	Toward toe-in
	Rear wheel camber	More positive	More negative
	Rear wheel toe	Toward toe-out	Toward toe-in
Anti-Sway Bars	Front	Soften	Stiffen
	Rear	Stiffen	Soften
Spring Rates	Front	Soften	Stiffen
	Rear	Stiffen	Soften
Shock Absorbers	Front	Soften	Stiffen
	Rear	Stiffen	Soften
Suspension Bushing	Front	Soften	Stiffen
	Rear	Stiffen	Soften
Brake Proportioning	Front	Reduce pressure	Increase pressure
	Rear	Increase pressure	Reduce pressure
Weight Distribution	Front	Reduce	Increase
	Rear	Increase	Reduce
Aerodnamic Spoilers	Front	Increase downforce	Reduce downforce
	Rear	Reduce downforce	Increase downforce