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Most textbooks I've read put this around 60-65% of wheel drag associated with the front wheels, and 35-40% with the rear; reverse those numbers for buses and tractor-trailers.
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Bernoulli's equation posits [a lot of stuff].
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It's simpler than that. The front wheels [typically] have to turn so the wheelwell is more voluminous than a rear wheel well. More volume leads to more turbulence. More turbulence leads to the dark side.