Litres consumed per 100 kilometres; lower is better. Standard metric efficiency unit.

Energy lost deforming tires as they roll. Low-pressure or wide tires raise it.

Automotive Calculators

Vehicle Dynamics Calculator

2026-09-27 6 min

Steady-state lateral G and cornering load from vehicle weight, speed and corner radius.

Lateral G: 0.96 g
Cornering Load: 3367 lb; Weight times lateral G

Calculator

Vehicle Weight(lb)

Corner Speed(mph)

mph

Corner Radius(ft)

Results update live as you type

Live statistics

Lateral G

0.96 g

Cornering Load

3367 lb

Weight times lateral G

Results

Optimal

Lateral G

0.96g

Cornering Load

3367lb

Weight times lateral G

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

Visualizations

Results overview

1Lateral G

3,367Cornering Load

Lateral G vs. Vehicle Weight

Lateral G

Formula

Centripetal acceleration from corner speed and radius, normalized by gravity, scaled to a force by vehicle weight.

latG = v^2 / (radius x 32.2), v in ft/s

Alternative Form

Cornering load = weight x latG

Variables

Symbol	Name	Unit	Description
v	Speed	ft/s	mph x 1.4667
R	Corner radius	ft	Centerline radius of the corner

Explanation

Lateral G grows with speed squared: doubling corner speed demands four times the grip at the same radius.

Step-by-Step Calculation

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

Step 1

Record the inputs.

Vehicle Weight:3500 lb

Corner Speed:60 mph

Corner Radius:250 ft

Result: 3 inputs ready

Step 2

Apply the formula.

latG = v^2 / (radius x 32.2), v in ft/s

Result: Primary result = 0.96 g

Step 3

Read every derived output.

Lateral G:0.96 g

Cornering Load:3367 lb

Result: Lateral G = 0.96 g

Final Answer

0.96

Worked Examples

See how the calculator works with different scenarios.

Scenario

Sweeping highway on-ramp.

Inputs

Weight:3,500 lb

Speed:60 mph

Radius:250 ft

Calculation

v = 88 ft/s; latG = 7,744/8,050 = 0.96 g

Result

0.96 g, 3,367-lb cornering load.

Interpretation

Needs performance street tires (~1.0 g) to hold flat out.

Understanding Your Result

Your Result: Lateral G: 0.96 g

Typical range: Street corners 0.5-0.9 g; track 1.0-1.5 g; aero cars 2 g+.

What This Means

Cornering demand in G plus the equivalent lateral force on the chassis.

Why It Matters

Sets the tire-grip target for any corner-speed goal.

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

Every corner asks the tires for a lateral force set by speed and radius.

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)

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

Practical Tips

•Measure radius on the driven line, not the map
•Grip demand rises with speed squared
•Compare against tire data before raising entry speed

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 does corner speed matter so much?

Lateral G scales with speed squared — 10% more speed needs 21% more grip at the same radius.

What is cornering load used for?

It sizes lateral suspension loads, bearing forces and the tire grip budget for setup work.

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Related Guides

Deepen your understanding with these educational resources.

Automotive Guides

Build planning, measurement protocol and validation how-tos

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.

EPA — FuelEconomy.gov DOE — Fuel-Efficient Driving Tips NHTSA — Driving Safety & Efficiency SAE International — Fuel Economy Standards Consumer Reports — MPG Truth IRS — Standard Mileage Rates

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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Page Information

Last Updated:

2026-09-27

Version:

2.0.0

References:

License:

Free to use for educational and professional purposes.