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Alignment 101 – QuickTrickApedia

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Suspension adjustment Affect on vehicle balance, extreme useable adjustment limit Symptom of TOO MUCH adjustment
Front spring rate increase More understeer Terminal understeer, front of car hops in corners, excess wheelspin in FWD car
Front spring rate decrease Less understeer Too much oversteer, oversteer then understeer if spring is so soft that the car bottoms under lean, car bottom excessively with a jolting ride
Rear spring rate increase. More oversteer Too much oversteer, hop in corners, twitchy
Rear spring rate decrease Less oversteer Car understeers, if way to soft car understeers then oversteers as car bottoms out under lean, car bottoms out excessively with a jolting ride
Front antisway bar stiffer More understeer Terminal understeer, Lifts inside front tire off the ground which can cause massive wheelspin, also not good for most effective tire usage as inside wheel is now doing nothing
Front antisway bar softer Less understeer Oversteer
Rear antisway bar stiffer More oversteer Big time oversteer, Can cause the inside rear tie to lift off the ground which is not too bad on a FWD car. On Classics, if this happens while trail braking into a turn, the abs can shut the brakes down which can be a bit scary
Rear antisway bar softer Less oversteer understeer
Front tire pressure higher Less understeer

Except with BFG R-1 tires. They will grip less and understeer more if the pressures are increased within a reasonable amount.

No traction as tire is crowned so more understeer, bad wheel spin, jarring ride, center of tires wear out
Front tire pressure lower More understeer

Except with BFG R-1 tires. They will grip more and understeer less if the pressures are decreased within a reasonable amount.

Edges of tires wear quickly because tire is folding over, feels mushy, tires chunk because low pressure means more heat build up
Rear tire pressures higher Less oversteer

Except with BFG R-1 tires. They will grip less and oversteer more if the pressures are increased within a reasonable amount.

No traction as tire is crowned so more oversteer, bad wheel spin on RWD cars, jarring ride, center of tire wears out
Rear tire pressures lower More oversteer

Except with BFG R-1 tires.

They will grip more and oversteer less if the pressures are decreased within a reasonable amount.

Edges of tires wear quickly because tire is folding over and cupping upward, feels loose in back, tires chunk because low pressure means more heat build up
More negative camber on front wheels Less understeer/ -3 degrees Poor braking, car is road crown sensitive, twitchy, tires wear out on the inside edge
Positive camber on front wheels More understeer, a little can make the tires last a little longer Poor braking, car is road crown sensitive, twitchy, tires wear out on the outside edge You almost never want to have positive camber unless you are a dweeb
More negative camber on rear wheels Less oversteer, more rear grip, less breakaway warning when limit is exceeded/-3 degrees More oversteer, car feels twitchy in back, tires wear out on inside edge
More positive camber at rear More oversteer, more forgiving at limit Car feels twitchy in the back, tires wear out on outside edge
Ride height to low, rice boy style Car twitchy with unpredictable dynamics, don’t race on when you see it because they will crash, taking you out Everything that could possibly be wrong, sudden over or understeer, twitchy due to bumpsteer
Toe-in front Car is stable while going straight. Turn in is average/1/8-inch total toe-in Car has slow twitchiness under braking, feels odd, kills the outside edge of tires
Toe-in rear car is less likely to suddenly oversteer when throttle is lifted/1/8-inch total toe-in Weird slow rocking movement in back, feels slow but still unstable, wears the outside edge of tires
Toe-out front Car turns in well, works pretty good in FWD cars as they tend to toe-in under load/1/4-inch total toe out Car is real twitchy under braking, car is very road crown sensitive, car wanders on straight road, kills inside edge of tires.
Toe-out rear Helps the car rotate, useful on tight low speed courses and slalom events/1/8-inch total toe out Not too good for street driving, causes lift throttle oversteer, car makes violent side to side rocking motions in rear, tires wear more on insides
Positive front caster Helps both stability, steady state cornering and turn in because the suspension will get more negative camber when the wheel is turned/ 6-7 degrees positive, negative caster is not useable Can increase understeer, especially in cars with wide, low profile tires due to a non-linear increase in corner weight. Increases steering effort, SE-R’s are not easily modified to make this adjustable, FWD cars can see an increase of torque steer with excessive positive caster

 

 

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