trd420
Go Kart Champion
If there’s one thing you need to know about automotive dynamometers, it’s that no two are likely to ever return the same number. No matter how closely calibrated, if you run the same car on two separate dynos, you’re going to get different output figures. Still, the variations aren’t typically huge—which is why European Auto Source’s dyno pull with a 2015 BMW M3 is so impressive.
EAS strapped an M3 to its dyno and recorded an absurd 424 horsepower and 426 lb-ft of torque—at the wheels. BMW claims that the M3 produces 425 horsepower and 406 lb-ft at the crank. Accounting for the typical 15 percent driveline losses from friction, etc., this means the 2015 M3 is really putting down something in the neighborhood of 480 horsepower and 480 lb-ft of torque at the crank. Assuming the M3 used for this dyno pull is real, that’s awesome news for future owners of the M3 and its two-door sibling, the M4.