if stopping distance increases in the rain, then why is increased road friction a contributing factor to worse fuel economy in the rain?

Question

if stopping distance increases in the rain, then why is increased road friction a contributing factor to worse fuel economy in the rain?

In: Physics

Answer 1

There’s a difference between rolling friction and grip friction. Rolling friction is how much resistance there is to a wheel that is rolling, and it goes up in the rain as the wheel needs to move the water out of the way to roll. Grip friction is the friction between the tire and the ground.