2Addicts | BMW 2-Series forum - View Single Post - Did BMW underrate the horsepower rating for the 228i?

henryyxyu · 06-13-2014, 08:30 PM

I realize this thread is getting pretty off-topic

to answer OP's question....:

http://www.bimmerfest.com/news/76530...-dyno-numbers/

These guys dyno'd 233HP to the wheel. BMW advertises 240HP for a 228i; Advertised HP ratings are usually crank I believe. 15%-20% loss from crank to wheel HP conversion is pretty standard, so "guesstimated" crank HP is around 275HP - 290HP

So yes, BMW did underrate their advertised HP by about 35HP - 50HP

EDIT: Just as a reference, EAS dyno'd a M235i at 307WHP, so crank HP rating is about 360HP - 385HP

06-13-2014, 08:30 PM	#68
henryyxyu Captain 108 Rep 636 Posts Drives: YXZ Join Date: Jul 2009 Location: CA iTrader: (1)	I realize this thread is getting pretty off-topic to answer OP's question....: http://www.bimmerfest.com/news/76530...-dyno-numbers/ These guys dyno'd 233HP to the wheel. BMW advertises 240HP for a 228i; Advertised HP ratings are usually crank I believe. 15%-20% loss from crank to wheel HP conversion is pretty standard, so "guesstimated" crank HP is around 275HP - 290HP So yes, BMW did underrate their advertised HP by about 35HP - 50HP EDIT: Just as a reference, EAS dyno'd a M235i at 307WHP, so crank HP rating is about 360HP - 385HP Last edited by henryyxyu; 06-13-2014 at 08:37 PM..
	Appreciate 0 Quote