Transport & Manufacturing
Automotive Rolling Resistance Coefficient ($C_{rr}$) Power Loss Sizer
Calculate automotive rolling resistance coefficient ($c_{rr}$) power loss using the stated engineering or scientific relationship and adjustable field inputs.
Preparing your result…
What this calculator does
Calculates Automotive Rolling Resistance Coefficient ($C_{rr}$) Power Loss Sizer using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
P = Crr × m × g × v
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • Constant rolling-resistance model force F=Crr·mass·g and wheel power P=F×ground speed, in N and W for kg, m/s² and m/s.
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Use dimensionless Crr applicable to tires, load, pressure, speed and surface; it is not the tire-road peak friction coefficient. This is a level-road constant-coefficient approximation. Motor/battery power additionally needs drivetrain efficiency and other road loads.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Rolling resistance coefficient | Vehicle mass (kg) | Speed (km/h) | Rolling resistance power |
|---|---|---|---|---|
| Worked example | 0.01 | 1,600 | 90 | 3.9227 kW |
| Half the amounts | 0.005 | 800 | 45 | 0.4903 kW |
| Double the amounts | 0.02 | 3,200 | 180 | 31.3813 kW |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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