Quote:
Originally Posted by trey100
The engine numbers don't align. How can the engine have 382 HP from 5000-6500 rpm while having a maximum of 369 ft-lb of torque?
The engine spec says 382 HP at 5,000 rpm. At that specific rpm - 5,000 - in order to make 382 HP, you must be making 400 ft-lb or torque. You cannot SIMULTANEOUSLY make 382 HP at 5,000 rpm and not make 400 ft-lb of torque at 5,000 rpm.
I'll use my F80 M3 as an example. Engine specs - 425 HP @ 5500-7300 rpm, 406 ft-lb @ 1850 - 5500 rpm. Take 5,500 rpm since we have the values at that rpm for both torque and HP. Plug in 406 and 5500 and voila you get 425 HP.
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What you are looking at is probably a mix of these options (i am leaning strongly to a mix of the first two)
1. BMW notoriously underrates its engines so the stated values are a likely a mush of crank and wheel power and tq that gets rounded up and down for the sake of the marketing materials looking cool with those flat curves
2. the engine likely allows for overboost in certain scenarios.. eg full throttle acceleration through the RPM band where additional torque wont be a shock to the engine componets but rather a smooth build as the engine spins up
3. they meant to say 5500-6500
Think of BMW specs sheets as marketing double talk... "BMW can confirm that the motor will be making AT LEAST xxx"