Difficult to split them all as an overall answer.
But on 4 wheels I would say Rallying.
Two wheels I would agree with the others here who have said road racing.
The skill riders need to ride fast and competently in the likes of the Isle of Man TT or the NW200 is far beyond what most bikers will ever be able to comprehend.
But on 4 wheels I would say Rallying.
Two wheels I would agree with the others here who have said road racing.
The skill riders need to ride fast and competently in the likes of the Isle of Man TT or the NW200 is far beyond what most bikers will ever be able to comprehend.