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Corner Weight Calculator

Car Corner Balance Calculator

By Rob Robinette

This calculator takes your four wheel weights and gives your car's current weights and percentages and generates target wheel weights to achieve a 50% Cross Weight. A 50% Cross Weight will yield a balanced handling car, one that turns equally well in both directions. For information on corner weighting see this excellent article: Grassroots Motorsports » Understanding Corner Weights

Left Front weight:          Right Front weight:

Left Rear weight:           Right Rear weight: 

  <  Enter your current corner weights above and click the "Calculate" Button.

These are your current calculated weights:

Total Weight =

                            Front Weight = %

Left Weight = %                        Right Weight = %

                            Rear Weight = %

Cross Weight = %  (50% is optimal)

Left Rear Bite =

Wedge = %    Wedge Delta

These are your target weights which will yield a 50% Cross Weight:

Left Front =                     Right Front =

Left Rear =                      Right Rear =

Cross Weight =   %

Left Rear Bite =

Wedge = %   Wedge Delta

Before putting your car on the scales you need to power up the scales and zero them with no weight on them. Also double check that the scales are connected properly--you can really screw up your suspension settings if you have any of the scales connected improperly (i.e. front left and right swapped).

You also need to roll the car back and forth a few times on the scales, being careful not to push it off the scales, to unload the suspension (as the car is lowered onto the scales after adjusting your suspension the tires will need to spread out to unbind).

Note your ride heights and suspension changes to track your progress. When you adjust your coil overs to get the desired corner weights your ride height will change. Always document your current ride heights and your coil over changes each time you weigh and adjust. It's better to make many small changes than to try to balance your car in one big step. You can also estimate your car's center of gravity (CG) height by using this page: CG Height Calculator

On the Scales

If you prefer Microsoft Excel a Corner Weight spreadsheet is available for download here Corner_Balance.zip

This is a screen shot of the Excel Corner Balance spreadsheet:

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