The Windows (98, Me, XP, NT, 2000, Vista) 3-D Suspension Analyzer does a complete double A-Arm (wishbone) suspension analysis, including bump steer, Ackerman, caster gain, anti-dive, tire scrub, camber gain and much more. Complete graphs and reports are included, and several new features not found in other programs: The Shim menu where you can shim the upper A-Arms up/down/in/out and see the effect on Camber & Caster. Another feature is letting the program find optimum settings automatically with its Optimize feature. First, tell program what you want to change, and what you are looking for during what type of suspension motion. The program finds best solution and asks if you want to keep it. Using the graph features, check how much better the "optimum" setting is compared to what you started with. The ability to change Ride Height either by Jacking on the Spring, Changing Tire Size, or Changing Spindle Drop. Detailed determination of Wheel Rate and Roll Stiffness. Build user designed reports and graphs for most calculated results at various levels of Dive, Roll and/or Steer. Some of the calculated results available include: Spring/Shock/Sway Bar Motion RatioCamber, degCaster, degCaster Trail Toe In, deg and inches Tire Scrub Ideal Ackerman Toe In, deg Ackerman Error, deg King Pin Angle, deg Scrub Radius Spindle Angle, deg Instant Center Height Instant Center Left Roll Center Height Roll Center Left Roll Stiffness, ft-lbs/deg Anti Dive, % Most all these parameters can be checked statically and dynamically as Dive, Roll and/or Steer change. Other features include: View car from front perspective or rear (driver's) perspective. View suspension from front (or rear), top and side. Simulate Rack and Pinion or Pitman Arm/Idler Arm/Center link steering systems. Draw Extension Lines to see how Instant Centers and Roll Centers are derived. Zoom in on the suspension layout drawing, or move the drawing up, down, left or right. Automatically calculate and display Camber Gain, Caster Gain, Toe Gain (bump steer) as measurements and locations are changed and updated.Pit Stop USA offers Performance Trends 3-D Double A-Arm (Wishbone) Suspension Analysis Version 2.4 for Windows - (Note: We Do Not Accept Returns On Opened Software Programs) SA24C at low everyday prices. Be sure to check out all of our products from Performance Trends including Performance Trends Suspension Analyzer.