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Weight Transfer (Dynamics) Calculator

2026-09-27 6 min

Lateral load transfer per axle from track, CG, weight split and G.

Lateral Transfer
667 lb
Outside gains, inside loses
Of Axle Weight
33.3 %

Calculator

Axle Weight(lb)
lb
CG Height(in)
in
Track Width(in)
in
Lateral G(g)
g
Results update live as you type

Live statistics

Lateral Transfer

667 lb

Outside gains, inside loses

Of Axle Weight

33.3 %

Results

Optimal

Lateral Transfer

667lb

Outside gains, inside loses

Of Axle Weight

33.3%

Planning estimate from standard automotive formulas. Validate with dyno, timeslip or datalog data when precision matters.

Visualizations

Results overview

666.7Lateral Transfer
33.3Of Axle Weight

Lateral Transfer vs. Axle Weight

Lateral Transfer

666.7lb
01,500

Formula

Roll-moment balance across the track width for cornering loads.

Transfer = axle weight x CG x G / track

Alternative Form

Lateral twin of the longitudinal transfer equation

Variables

SymbolNameUnitDescription
TTrackinWider = less transfer

Explanation

Wide track and low CG preserve inside-tire load — the geometric half of mechanical grip.

Step-by-Step Calculation

Follow each step to understand how the result is calculated from your inputs.

Step 1

Record the inputs.

Axle Weight:2000 lb
CG Height:20 in
Track Width:60 in
Lateral G:1 g
Result: 4 inputs ready
Step 2

Apply the formula.

Transfer = axle weight x CG x G / track
Result: Primary result = 667 lb
Step 3

Read every derived output.

Lateral Transfer:667 lb
Of Axle Weight:33.3 %
Result: Lateral Transfer = 667 lb
Final Answer
667

Worked Examples

See how the calculator works with different scenarios.

Scenario

Sedan front axle mid-corner.

Inputs

Axle:2,000 lb
CG:20 in
Track:60 in
G:1.0

Calculation

2,000 x 20 x 1/60 = 667 lb

Result

667-lb transfer (33%).

Interpretation

Outside tire at 1,667, inside at 333 — camber curves must cope.

Understanding Your Result

Your Result: Lateral Transfer: 667 lb

What This Means

Cornering load shift across the axle.

Why It Matters

Sets outside-tire demand and the camber/pressure it needs.

Professional Interpretation

Treat the primary result as a planning estimate, then validate on a dyno, at the track, or with logged sensor data. If measured numbers disagree by more than ~10%, re-check inputs (units are the usual culprit) before changing parts.

Recommendations

  • •Double-check units on every input before trusting the result
  • •Compare against the worked example below to sanity-check magnitude
  • •Validate with measured data (dyno, timeslip, datalog) when it matters

Learn — fuel economy, deeply

Cornering pivots load across the track.

1 · Where the gallon goes (energy path)

Engine heat

60–70% lost

Coolant + exhaust carry most energy away. Hybrids recover some via Atkinson cycle + regen.

Driveline

5–15% lost

Transmission, differential, accessories. CVTs and 8–10 speed autos lose less.

Aero drag

∝ v²

Doubles from 55→78 mph. Roof boxes hurt more than trunks.

Rolling + brakes

10–20%

Tires, weight, stops. Regen braking (hybrid/EV) reclaims city braking energy.

4 · Measure like a pro (the 3-tank protocol)

  1. Fill to first click at the same pump, record the odometer (Tank 0).
  2. Drive normally for 2–3 tanks; always refill to first click at the same pump.
  3. MPG = total miles ÷ total gallons across all tanks — averaging kills pump-click noise.
  4. Cross-check with the trip computer; a persistent >10% gap means the computer needs calibration — or the car needs service.
  5. Log with an OBD-II dongle for per-trip MPG if you want to isolate commute vs. highway behavior.

Practical Tips

  • •Track width is free grip (spacers/offsets)
  • •Lower CG pays twice (transfer + roll)
  • •Stagger pressures for the transfer

Common Mistakes

Mixing units (inches with mm, psi with kPa)
Convert every input to the unit shown on its field before calculating.
Trusting a single output blindly
Cross-check with the worked example and, when it matters, a dyno or datalog.

Assumptions

This calculator makes the following assumptions to provide estimates:

Steady-state model: Formulas assume stabilized conditions; transients, heat soak and traction limits are excluded.
Standard factors: Empirical constants (BSFC, VE, drivetrain loss) use typical values — your combination may differ.

Limitations

Be aware of these limitations when using this calculator:

Estimate, not measurement: Predictions carry real-world scatter of roughly ±5–15% depending on the model.
No transient effects: Shift time, wheelspin, spool lag and heat soak are not modeled here.

Frequently Asked Questions

Answers to common questions about this calculator.

Why do wide cars corner better?
Track width divides transfer — wider means less load shift, more total grip via load sensitivity.
Lowering vs widening?
Both help identically in the equation (CG vs track). Do both if rules allow.

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Related Guides

Deepen your understanding with these educational resources.

Glossary

Technical terms used in mortgage calculations explained in plain language.

MPG
Miles per gallon. Distance travelled per gallon of fuel; higher is better. US gallon = 3.785 L.
L/100 km
Litres consumed per 100 kilometres; lower is better. Standard metric efficiency unit.
MPGe
Miles per gallon-equivalent. EV metric: miles travelled on 33.7 kWh (energy of 1 gal of gasoline).
CAFE
Corporate Average Fuel Economy — US fleet-average efficiency standard enforced by NHTSA.
Rolling resistance
Energy lost deforming tires as they roll. Low-pressure or wide tires raise it.
Aerodynamic drag
Air resistance growing with the square of speed — why highway MPG falls fast above 60 mph.
Hypermiling
Driving techniques (coasting, steady speed, anticipation) that maximise real-world MPG.
OBD-II
On-board diagnostics port. Scanners and dongles read live MPG, fuel trim and fault codes.

Authoritative References

Trusted sources and standards referenced by this calculator.

Applicable Standards

EPA Fuel Economy Testing (40 CFR Part 600)CAFE — Corporate Average Fuel Economy Standards (NHTSA)WLTP — Worldwide Harmonised Light Vehicle Test ProcedureSAE J1321 / J1711 — Fuel consumption test proceduresISO 2575 — Road vehicles symbols & efficiency markings

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