Quote:
Originally Posted by yxc145
why does BMW claim that 535 has 300 HP? can someone explain the logic behind this?
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Car manufactures rate horse power off the crank - this is considered BHP/BTQ or brake horse power/brake torque and is calculated on an engine dyno. As Enthusiast, we are only concerned with the power the reaches the wheels. There is a percentage of power lost in the drivetrain (10-20%) - this is called drivetrain loss. The power that is measured at the wheels is WHP/WTQ or wheel horse power/wheel torque.