"Road grime" refers to the dirt, mud, or dust that accumulates on vehicles while driving on roads.
Sentences with «road grime»
Covered with road grime as a proper Jeep should be,... (autoweek.com)
The rocker panels have been integrated into the doors, which should keep mud, snow and road grime off your pant legs when you enter or exit the Equinox. (automobilemag.com)
Does the bottom of your car look oily at all either wet or built up with lots of road grime? (mechanics.stackexchange.com)