the rubber meets the road

== English == === Alternative forms === the rubber hits the road === Etymology === A metaphor derived from the point of contact between automobile tires and pavement. === Pronunciation === === Phrase === the rubber meets the road (idiomatic, with "where" etc.) A place or circumstance at which the implementation of a plan or intent is to be achieved. Synonym: (South Africa) the tackies hit the tar Used other than figuratively or idiomatically: see rubber,‎ meet,‎ road. ==== Usage notes ==== Almost always used with the prepositions that, when, or where.