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Cars & Vehicles

How do you convert engine horsepower to wheel?


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Wiki User
May 30, 2009 11:14PM

You get the engine horsepower from the manufacturer. They take it off the flywheel. You take wheel horsepower by putting a steel band around the tire. There is a pole attached to the band. The pole extends out a foot or two from the vehicle. A big flat square piece of metal is attached to the end of the pole. That piece of metal is put on a scale. That way a shop figures out wheel horsepower. The conversion shows that about 50% of the power at the flywheel makes it to the wheels. Since electric generators and motors have greater than 90% efficiency, conversion to gasoline-electric vehicles could theoretically double mileage.