Engine Tuning and Chassis
Corner Weight Percentage Calculator
Calculate one wheel position as a percentage of total vehicle weight. Scale pads must be level and the vehicle prepared consistently.
Inputs for corner weight percentage
The loaded values demonstrate the calculation. Replace them with measurements for one vehicle and operating condition.
The measurement being modeled
Calculate one wheel position as a percentage of total vehicle weight — vehicle mass, gearing, traction, temperature, and aerodynamic conditions can change the observed result.
Scale pads must be level and the vehicle prepared consistently — that condition defines when corner weight percentage is comparable with another result.
Turning the inputs into a result
In “corner percentage = corner weight ÷ total vehicle weight × 100,” the printed units define how each term is interpreted.
No term beyond selected corner weight, total vehicle weight, and target corner share is introduced in “corner percentage = corner weight ÷ total vehicle weight × 100.”
Input reference points
The Selected corner weight entry represents scale reading at one wheel — before calculating, use the same loaded condition for every weight and retain the scale ticket or rating source.
Total vehicle weight: Sum of all four scale readings — a compatible entry should use the same loaded condition for every weight and retain the scale ticket or rating source.
For Target corner share, use the quantity described as reference percentage — in the vehicle record, keep the percentage basis explicit and do not mix a decimal fraction with a percent value.
Following one calculation through
The displayed form begins with Selected corner weight = 920 lb, Total vehicle weight = 3,600 lb, and Target corner share = 25%.
The arithmetic check is complete when the page displays Corner weight percentage = 25.56%.
Using the supporting measurement
Corner weight percentage answers “Calculate one wheel position as a percentage of total vehicle weight.”
A 25 percent corner target is not appropriate for every vehicle or setup — when that condition changes, compare separate calculator runs instead of blending the inputs.
After recording this output, use the Carburetor CFM to estimate four-stroke engine airflow for carburetor sizing.
Operating conditions outside the formula
Traction, grade, wind, temperature, driver input, and control-system intervention remain outside this simplified model — for total vehicle weight, the page specifically expects sum of all four scale readings.
Context for the next measurement
The calculation file for Corner Weight Percentage should include the source behind selected corner weight (scale reading at one wheel) and the source behind target corner share (reference percentage).
The operating record is incomplete without the limitation “Scale pads must be level and the vehicle prepared consistently,” which determines whether the next result is comparable.
Testing a second case
For Corner Weight Percentage, a useful second case changes selected corner weight only when the revised value still means scale reading at one wheel. Keep total vehicle weight on its original definition, sum of all four scale readings, so the comparison answers the same vehicle question.
If target corner share also changes, the new value represents reference percentage and should be documented as a separate operating case rather than attributed to selected corner weight alone.
Before using this result
What measurement source fits Selected corner weight when it represents scale reading at one wheel?
Because selected corner weight represents scale reading at one wheel, use a source tied to the exact vehicle, component, and operating period described by the other fields.
How does the warning “Scale pads must be level and the vehicle prepared consistently” affect Corner weight percentage?
The condition “Scale pads must be level and the vehicle prepared consistently” is not corrected automatically by the numeric inputs, so create a separate corner weight percentage case when it changes.