The interaction between the We Can Prove Why Extra Mass on Bike Wheels Is Your Worst Enemy ... Air Resistance. F r = rolling resistance or rolling friction (N, lb f). where . The rolling resistance can be expressed as. BY Ryan Cooper Here’s your guide to better understanding the often overlooked force component of rolling resistance, and how a minor change like switching out your tires might make a noticeable difference on race day. Misinformed, as most people were until recently. As a rear tire it sucks if you are in wet or muddy conditions. Did you find this helpful? Narrower tires actually have more rolling resistance as it's recently been shown that rolling resistance is a product of % of casing deformation. Rolling resistance Rolling resistance is the reaction force acting on the bicycle due to the interaction between the mountain bike tyre and the terrain surface it is travelling on. In turn, this tells us how many watts we can save just by moving to a wheelset with lower rolling resistance. Yes | No rolling resistance of both tyres will, in effect, change depending on the technique of the cyclist (Ballantine & Grant, 1998). It works best as a front tire. dominguez.david.mtbr answered on October 2, 2017. F r = c W (1). The sloping tread forces you to spin out on wet or grassy climbs.

Doing this tells us how much of our power is going toward overcoming rolling resistance. Now, there are of course other factors, like aerodynamic drag of narrow vs wide.

Rolling resistance on hardpack or road is actually quit good. The force that resists the motion of a body rolling on a surface is called the rolling resistance or the rolling friction.. Here are those values, assuming a 75kg rider on a 7kg bike traveling at 40kmh (24.9mph). c = rolling resistance coefficient - dimensionless (coefficient of rolling friction - CRF) Wider tires have a smaller % of casing deformation, therefore less losses.