Materials scientists are measuring the rolling friction of tiny, micrometer-sized particles. These measurements permit them to better understand everyday products such as concrete. For the first time, ...

Rolling resistance is the force that tires experience while moving on a surface. High rolling resistance tires are not very ...

If there's one component on any vehicle which influences its handling characteristics more than anything, it's the tires. Tires are, in ideal situations, the only parts of a car that touch the ground, ...

Friction exists because most surfaces really look like this under a microscope. Note the hills, the crests and the valleys. These are called asperities, or material deformations. They occur on rough ...