Weight Transfer Calculator
Calculate dynamic weight transfer under braking, cornering, and acceleration. See exactly how much load sits on each tire in a combined maneuver.
The outside front tire carries 54% of total vehicle weight during combined braking and cornering. This is your most critical tire.
Weight Transfer Accuracy
This calculator uses simplified rigid-body weight transfer. Real-world factors include:
- Geometric vs elastic weight transfer (roll center height splits them)
- Anti-squat and anti-dive geometry
- Spring and damper rates affecting transient transfer
- Aero loads at speed (downforce adds to effective weight)
Methodology
Longitudinal: ΔW = (Weight × G × CG Height) ÷ Wheelbase
Lateral (per axle): ΔW = (Axle Weight × G × CG Height) ÷ Track Width
Corner load: Static + longitudinal transfer ± lateral transfer
Frequently Asked Questions
Why does the outside front tire carry the most weight?
Under braking, weight shifts forward (increasing front load). Under cornering, weight shifts to the outside. The outside front tire gets BOTH transfers simultaneously — this is why front tire grip and brake bias are so critical.
How do I find my CG height?
A rough estimate is 35-45% of vehicle height for sedans, 30-40% for sports cars. The precise method involves weighing the car level, then raising one axle to a known height and re-weighing. The CG height can be calculated from the weight shift.
What is a typical G-force for a track car?
Street tires: 0.8-1.0G cornering, 1.0G braking. R-compound tires: 1.0-1.3G cornering, 1.2-1.5G braking. Slicks with aero: 1.5-2.5G+ cornering. These values vary significantly with tire compound and vehicle type.
Disclaimer & Legal Notice
All tools and calculators provided by Lapsite are for informational and educational purposes only. While we strive for mathematical precision, these results are approximations and should not be used as the sole basis for critical engineering, financial, or safety decisions. Lapsite Ltd and its creators provide no warranty, express or implied, regarding the accuracy or fitness of these calculations for any specific use.Always double-check calculations independently, especially for safety-critical components such as brakes, suspension, or structural changes. By using these tools, you agree that Lapsite Ltd is not liable for any mechanical failure, financial loss, or injury resulting from the use of this data.
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