This suspension tuning guide will help you identify possible handling issues and apply proper resolutions.  Follow the guidance closely and make one change at a time for best results. Be sure to take note of the base line alignment specs listed below. A modern, high performance alignment will greatly improve your driving experience and make your car easier to drive at speed.

If you have any doubts about particular tuning changes, feel free to give us a call — or better yet, seek us out at an upcoming high performance driving event. We will be glad to observe your car’s performance and make tuning suggestions.

Click HERE to download a PDF copy of the Suspension Tuning Guide

Suspension Tuning Guide

TIRESHandling ConditionResolution
Understeer = PushMore front tire pressure
Less rear tire pressure
Oversteer = LooseLess front tire pressure
More rear tire pressure
Try to get tire temps within 10 degrees across the face of the tire. Excessive center tire tempLess tire pressure
Excessive edge tire tempMore tire pressure
CAMBERHandling ConditionResolution
Understeer = PushMore negative front camber
Less negative rear camber
Oversteer = LooseLess negative front camber
More negative rear camber
Excessive inside edge tire tempLess negative camber
Excessive outside edge tire tempMore negative camber
TOEHandling ConditionResolution
Corner ENTRY understeerMore front toe OUT
Consistent understeerMore rear toe out
Corner ENTRY oversteerMore front toe IN
Consistent oversteerMore rear toe IN
Poor straight line stabilityMore front toe IN
More rear toe IN
CASTERHandling ConditionResolution
Poor straightline stabilityMore positive caster
A good alignment base line is:Camber
-.25 to -1.5 degrees
positive 6 degrees or more
1/8” toe IN street
¼" toe OUT track
SPRINGSHandling ConditionResolution
We have an excellent spring rate calculator online: Understeer = PushLess front spring rate
Spring Rate CalculatorOversteer = LooseMore front spring rate
Less rear spring rate
SWAY BARSHandling ConditionResolution
Understeer = PushLess front bar
More rear bar
Oversteer = LooseMore front bar
Less rear bar
SHOCKSHandling ConditionResolution
Corner entry understeer = PushMore front compression
More rear rebound
Corner entry oversteer = LooseLess front compression
Less rear rebound
Corner exit understeer = PushMore front rebound
More rear compression
Corner exit oversteer = LooseLess front rebound
Less rear compression