How to use this calculator
- Enter axle load and lateral g. Use the axle being checked and expected cornering acceleration.
- Enter heights. Set effective CG height and roll-center height.
- Enter track width. Use tire centerline track width.
- Review tire loads. Check inside and outside tire load estimates.
How it works
The calculator estimates axle lateral load transfer using: transfer = axle load x lateral g x height / track. Roll-center height supplies the geometric part; the remaining height supplies the elastic part.
Use lateral acceleration, tire contact patch and corner weight alongside this screen.
Worked example
Verified against the live calculator
A 750 kg axle at 1.0 g, 520 mm CG height and 1,580 mm track transfers about 247 kg from the inside tire to the outside tire by this first-pass model.
Frequently asked questions
What is roll-center load transfer?
It is the lateral load transfer component associated with the roll-center height, separated from the remaining elastic roll moment arm.
How is lateral load transfer calculated?
For one axle, this screen uses axle load times lateral g times height divided by track width.
Can roll-center height be negative?
Yes. Below-ground roll centers can be entered as negative height.
Does this calculate full roll balance?
No. Full roll balance also needs front and rear roll stiffness, anti-roll bars, tire behavior and suspension kinematics.
Method & assumptions
- Uses one-axle mass-equivalent load transfer for a quick setup screen.
- Does not model front/rear roll stiffness distribution, tire load sensitivity, camber or aero platform effects.