Bicycle Tire Size Rolling Resistance

This rule has been experimentally verified for cast iron wheels 8 24 diameter on steel rail and for 19th century carriage wheels.

Bicycle tire size rolling resistance. 42 5 kg 94 lbs rr 60 psi 4 1 bar puncture test tire thick ness rating. Rolling resistance at 100 psi 6 9 bars single tire speed. Rr watts crr speed m s load n to calculate rolling resistance at a given speed and load. The main reason for the loss of energy is the constant deformation of the tire.

According to dupuit 1837 rolling resistance of wheeled carriages with wooden wheels with iron tires is approximately inversely proportional to the square root of wheel diameter. 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. 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. 42 5 kg 94 lbs rr 100 psi 6 9 bar rolling resistance at 80 psi 5 5 bars single tire speed.

29 kmh 18 mph load. Tubeless vs latex vs butyl tubes. 29 kmh 18 mph load. Tubolito inner tube tests.

Each bicycle tire should of course roll as easily as possible. Rolling resistance 60 psi 4 1 bar. The higher rolling resistance of the bigger tire is because it provides more comfort at the 15 tire drop air pressure. And instead of the current standard width of 23 mm the professional road racers choose more and more tires with widths of 24 or 25 mm.

42 5 kg 94 lbs rr 80 psi 5 5 bar rolling resistance at 60 psi 4 1 bars single tire speed. When compared to the fastest tubeless road bike tires that are extremely thin and light the grand prix 5000 tl offers a much higher tread thickness and puncture resistance while rolling resistance is within 1 2 watts of the fastest tires. Rolling resistance 120 psi 8 3 bar. Rolling resistance 100 psi 6 9 bar.

When all tires are adjusted to the same comfort level rolling resistance is nearly the same 0 2 watts max for all sizes of the gp 5000. Tubeless sealant rolling resistance. The tire widths of 18 and 20 mm are hardly available anymore. Bicycle rolling resistance special articles.

Rolling resistance 80 psi 5 5 bar. Gp 5000 endurance test. We feel the ultimate test is adjusting all tires to the same comfort level. And professional road racers are tending to ride wider tires more and more.

In contrast to a car a cyclist has only very limited physical power which he wants to apply as efficiently as possible. The best road bike tires. 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 is the energy that is lost when the tire is rolling.