Braking by Nick Ienatsch

[RxZ]

Originally Posted by Donster

OK, is there some rule of thumb that generally takes these factors into account?

No.

Tires are made out of different compounds, roads are made of different materials. Each has their own coefficient of friction differing from dry to wet. To have a rule of thumb, you would have to know all the variables as mentioned.

The only rule of thumb is, whatever traction you have when dry, there is less when wet.