Why is it that when you put stiffer springs in the rear is gets rid of understeer?
Junior Member
Joined: Jan 2003
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quicker weight transfer at the rear
In a neutral handling car, increase the spring rate on either front or rear and that end will lose traction first. Compliance in the suspension system determines how quickly weight is transferred. In a corner, stiffer rear springs would cause the weight to transfer to the rear outside wheel faster than the front outside wheel, thereby causing more oversteer.
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Joined: Aug 2002
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From: Los Angeles/Burbank
Some of it doesn't apply to front drive cars......
Understeer on initial turn will = more and more understeer as you progress through the corner.
FWD cars have to loose as hell! Then all you do is balance the rear with the throttle (throttle steer)!
FWD cars have to loose as hell! Then all you do is balance the rear with the throttle (throttle steer)!
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AudiWorld Senior Member
Joined: Mar 2000
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Alters relative roll stiffness front vs. rear.
AFAIK
A stiffer rear spring will decrease grip at the rear and increase grip at the front.
Heavier springrate at the rear will create greater roll stiffness at the rear. Greater roll stiffness means greater weight transfer at that particular pair of wheels. Greater weight transfer means less grip due to tire load sensitivity.
Total weight transfer is unaffected by roll stiffness and since the rears will now have more transfer, the fronts will have less. With less weight transfer at teh fronts, there will be more grip, again due to tire load sensitivity.
(Tire load sensitivity is a characteristic where the greater the load placed on a tire, the lower its frictional coefficient.)
A stiffer rear spring will decrease grip at the rear and increase grip at the front.
Heavier springrate at the rear will create greater roll stiffness at the rear. Greater roll stiffness means greater weight transfer at that particular pair of wheels. Greater weight transfer means less grip due to tire load sensitivity.
Total weight transfer is unaffected by roll stiffness and since the rears will now have more transfer, the fronts will have less. With less weight transfer at teh fronts, there will be more grip, again due to tire load sensitivity.
(Tire load sensitivity is a characteristic where the greater the load placed on a tire, the lower its frictional coefficient.)
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