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| | Open wheel car - Wikipedia, the free encyclopedia |
 | | Although the lower weight of an open wheel racecar allows for better performance, the exposure of the wheels to the airstream causes a very high aerodynamic drag at high speeds (the top of the tire is moving at double the speed of the car, and aerodynamic drag force varies with the square of the speed). |
| | Open wheel car is a term for cars, usually purpose-built racecars, with the wheels located outside the car's main body, as distinct from cars which have their wheels below the body or fenders, in the manner of most street cars, stock cars, or touring cars. |
| | However, because the cars do not particularly resemble road cars, and the aerodynamics favour leading drivers over tailing ones thus making overtaking difficult (not to mention the fragility of the cars making the bumping and jostling common in touring and stock car racing impossible), only a few open-wheel categories draw significant crowds. |
| en.wikipedia.org /wiki/Open-wheeler (442 words) |
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