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

It isn’t. Road friction decreases in the rain. That could make fuel economy slightly worse as the tires might slip slightly, and fuel economy also decreases because the car has to move water out of the way as you move forward. This is a pretty negligible impact though.