Rolling Resistance Coefficient Examples
Table of rolling resistance coefficient examples:
| Crr | b | Description |
| 0.0003 to 0.0004 | "Pure rolling resistance" Railroad steel wheel on steel rail | |
| 0.0010 to 0.0024 | 0.5 mm | Railroad steel wheel on steel rail. Passenger rail car about 0.0020 |
| 0.001 to 0.0015 | 0.1 mm | Hardened steel ball bearings on steel |
| 0.0019 to 0.0065 | Mine car cast iron wheels on steel rail | |
| 0.0022 to 0.005 | Production bicycle tires at 120 psi (8.3 bar) and 50 km/h (31 mph), measured on rollers | |
| 0.0025 | Special Michelin solar car/eco-marathon tires | |
| 0.005 | Dirty tram rails (standard) with straights and curves | |
| 0.0045 to 0.008 | Large truck (Semi) tires | |
| 0.0055 | Typical BMX bicycle tires used for solar cars | |
| 0.0062 to 0.015 | Car tire measurements | |
| 0.010 to 0.015 | Ordinary car tires on concrete | |
| 0.0385 to 0.073 | Stage coach (19th century) on dirt road. Soft snow on road for worst case. | |
| 0.3 | Ordinary car tires on sand |
For example, in earth gravity, a car of 1000 kg on asphalt will need a force of around 100 newtons for rolling (1000 kg × 9.81 m/s2 × 0.01 = 98.1 N).
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“The gods had condemned Sisyphus to ceaselessly rolling a rock to the top of a mountain, whence the stone would fall back of its own weight. They had thought with some reason that there is no more dreadful punishment than futile and hopeless labor.”
—Albert Camus (1913–1960)
“You may either win your peace or buy it: win it, by resistance to evil; buy it, by compromise with evil.”
—John Ruskin (1819–1900)
“Histories are more full of examples of the fidelity of dogs than of friends.”
—Alexander Pope (1688–1744)