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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Famous quotes containing the words rolling, resistance and/or examples:
“On a starred night Prince Lucifer uprose,
Tired of his dark dominion, swung the fiend
Above the rolling ball in cloud part screened,”
—George Meredith (1828–1909)
“The free man is a warrior.—How is freedom measured among individuals, among peoples? According to the resistance that must be overcome, according to the trouble it takes to stay on top. The highest type of free man must be sought where the highest resistance is constantly overcome: five steps away from tyranny, close to the threshold of the danger of servitude.”
—Friedrich Nietzsche (1844–1900)
“There are many examples of women that have excelled in learning, and even in war, but this is no reason we should bring ‘em all up to Latin and Greek or else military discipline, instead of needle-work and housewifry.”
—Bernard Mandeville (1670–1733)