The Right Way to Corner Balance a Racecar

Corner balancing, or scaling, is a fundamental part of a well-handling racecar. Managing the weight on each tire allows a racer to maximize grip in critical situations. Performing adjustments and measurements in a specific order ensures accurate results, as any suspension change can affect how weight is distributed to each tire.
 

“Understanding how the racecar’s weight is distributed among the tires is critical for tuning its handling. When the margin of victory is less than a second on any given weekend, we need a scale system with impeccable accuracy and the flexibility of reliable wireless communication. Intercomp’s wireless Microflex™ system, with its 4-load cell design, fits the bill in all respects.”

– Nate Bellows, Car Chief - No. 18 Joe Gibbs Racing NASCAR Cup Series Toyota Camry

First, set the desired static ride height at each corner, which will vary depending on the type of racing, chassis design, and preferred handling characteristics. These values are typically provided by a chassis manufacturer, prep shop, or a competitor running a similar setup. Next, set the static camber, caster, and toe-in measurements, then deploy the RFX™ Scale System.

For the most accurate results, Intercomp recommends using a drive-on scale rack, levelers with a roll-off pad, or individual pad levelers with any system. Levelers allow adjustment of the height and angle of each pad so they are perfectly level and aligned. After turning on and zeroing the system, place the car on the scale pads and record the weight at each corner. If the values differ from the target, adjust by moving ballast or repositioning components within the vehicle.

For racecars with adjustable ride height, small incremental changes can fine-tune weight distribution. Typically, lowering ride height increases weight on that corner, while raising ride height reduces it. Multiple small adjustments may be required to achieve the desired balance. After adjustments, re-check all suspension settings to confirm proper static values.

By following this process, racers can optimize grip exactly where it is needed. Circuit racers benefit from improved predictability through corners, while drag racers can maximize traction and acceleration. With greater consistency, drivers can focus on performance and gaining a competitive edge.

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