Bicycle Tire Width And Rolling Resistance

Bicycle rolling resistance special articles.

Bicycle tire width and rolling resistance. The tire widths of 18 and 20 mm are hardly available anymore. At the same pressure narrow and wide tires will have the same contact area. All numbers are for a single tire at a speed of 29 km h 18 mph and a load of 42 5 kg 94 lbs. In general rolling resistance with a road tire 23 to 28mm wide is at a minimum somewhere in the range of 80 to 120 psi about 6 to 8 bars on most roads with most tires for people of most weights but it s very hard to say what is the ideal pressure.

Rolling resistance 100 psi 6 9 bar. Marathon 32 37 40 47 comparison. Tubeless sealant rolling resistance. 29 kmh 18 mph load.

Tubeless vs latex vs butyl tubes. Gp 5000 23 25 28 32 comparison. 42 5 kg 94 lbs rr 120 psi 8 3 bar rolling resistance at 100 psi 6 9 bars single tire speed. Measured width on a 17 8 mm inner width rim at an air pressure of 100 psi 6 9 bars width weight rolling resistance at 120 psi 8 3 bars single tire speed.

The best road bike tires. 1 internal friction and hysteresis within the tire s materials and 2 on rough roads small bumps lifting the bike and rider slightly on. 42 5 kg 94 lbs rr 100 psi 6 9 bar. The higher the inflation pressure the inferior the tire deformation and thus rolling resistance.

However this has proved to be untrue. Racers would go even narrower to 21mm with the general thought that the narrower the surface area the less rolling resistance. Rolling resistance 80 psi 5 5 bar. Rolling resistance 60 psi 4 1 bar.

Rolling resistance 120 psi 8 3 bar. On a completely smooth surface the following applies. The fastest rolling tire the 300 tpi strada 24mm and the widest tire the 27mm paris roubaix had the biggest increase in rolling resistance 1 6 watts when dropping pressure from 112 psi to 84. Tire rolling resistance on the road is caused by.

Rr watts crr speed m s load n to calculate rolling resistance at a. Tire pressure tire diameter tire width tire construction tire tread and other factors all have an effect on rolling resistance. Tubolito inner tube tests. 29 kmh 18 mph load.