E90Post
 


GetBMWParts
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > BMW horsepower measurement



Reply
 
Thread Tools Search this Thread
      07-16-2006, 04:24 PM   #1
bruinbear
New Member
1
Rep
28
Posts

Drives: Jet Black 325i
Join Date: Jul 2006
Location: West Los Angeles

iTrader: (0)

BMW horsepower measurement

I test drove a 325i this morning and the sales associate said that BMW measures their horsepower by the output from the wheels and not the output from the engine. Is this true or is he trying to pull my leg?

This is my first post and I don't know if this has been answered or is common knowledge, so bear with me please.

By the way the 325i is one nice car!
Appreciate 0
      07-16-2006, 04:29 PM   #2
shimshimhada
Brigadier General
shimshimhada's Avatar
United_States
279
Rep
4,838
Posts

Drives: Portal
Join Date: Jul 2005
Location: Portal

iTrader: (2)

Your SA is ignorant or a liar; he's completely pulling your leg. BMW lists their HP ratings as BHP, from the crank, not the wheels.
Appreciate 0
      07-16-2006, 05:44 PM   #3
whippersnapper
Captain
whippersnapper's Avatar
United_States
18
Rep
972
Posts

Drives: people mad
Join Date: Jun 2006
Location: Atlanta

iTrader: (0)

Garage List
2006 BMW 325i  [0.00]
2006 BMW 325i  [0.00]
Quote:
Originally Posted by bruinbear
I test drove a 325i this morning and the sales associate said that BMW measures their horsepower by the output from the wheels and not the output from the engine. Is this true or is he trying to pull my leg?

This is my first post and I don't know if this has been answered or is common knowledge, so bear with me please.

By the way the 325i is one nice car!
Good one!
__________________
__________________________________________________ __________________
2006 BMW 325i, Jet Black, 6MT, ZSP, Black Leather, Aluminum, Power Seats, Logic 7
Appreciate 0
      07-16-2006, 07:11 PM   #4
canucklion
pull my finger to get your kinder® surprise
canucklion's Avatar
Canada
141
Rep
10,455
Posts

Drives: circles around you
Join Date: Dec 2005
Location: Toronto, Canada

iTrader: (9)

I think he is a ignorant liar

Quote:
Originally Posted by shimshimhada
Your SA is ignorant or a liar; he's completely pulling your leg. BMW lists their HP ratings as BHP, from the crank, not the wheels.
__________________
Appreciate 0
      07-17-2006, 03:59 AM   #5
NFS
Major General
NFS's Avatar
United Kingdom
195
Rep
9,218
Posts

Drives: M340i
Join Date: Jul 2006
Location: UK

iTrader: (0)

Quote:
Originally Posted by bruinbear
I test drove a 325i this morning and the sales associate said that BMW measures their horsepower by the output from the wheels and not the output from the engine. Is this true or is he trying to pull my leg?

This is my first post and I don't know if this has been answered or is common knowledge, so bear with me please.

By the way the 325i is one nice car!
He's talking tosh -

Brake horsepower (bhp) is the measure of an engine's horsepower without the loss in power caused by the gearbox, generator, differential, water pump and other auxiliaries. The actual horsepower delivered to the driving wheels is less. An engine would have to be retested to obtain a rating in another system.

BMW don't have BHP on their UK site - just HP - as they are German - I think it's probably measured as HP (DIN).

http://en.wikipedia.org/wiki/Horsepower

Either way - no manufacturer is going to publish HP at the wheels when everyone else is doing so on a different basis.

In the end though - peak HP is a pretty useless measurement anyway - torque curves are a much more helpful illustration of an engines potential.
Appreciate 0
      07-17-2006, 09:34 AM   #6
ksfrogman
Major General
ksfrogman's Avatar
United_States
386
Rep
6,749
Posts

Drives: E90 330i 6MT
Join Date: Nov 2005
Location: Torrance, CA

iTrader: (12)

Garage List
2006 330i  [0.00]
2006 330i  [0.00]
Send a message via AIM to ksfrogman
People, especially car sales people, think they can b.s. to impress, but their lies and ignorance never stand the test of time.
__________________
Appreciate 0
      07-17-2006, 10:02 AM   #7
Tony
Second Lieutenant
46
Rep
286
Posts

Drives: 2018 X3 M40i
Join Date: Mar 2005
Location: Rockland County

iTrader: (0)

Typical Dealer B.S.

Dealer Rule #1. If they do not know the answer to a question, just make something up. Chances are, the buyer will not know what you are talking about anyway.

I've yet to meet a dealer that knew more about cars than I do. They are "Car Salesmen" not "car enthusiasts". never rely on dealer for car information other than price.
Appreciate 0
      07-17-2006, 10:15 AM   #8
whippersnapper
Captain
whippersnapper's Avatar
United_States
18
Rep
972
Posts

Drives: people mad
Join Date: Jun 2006
Location: Atlanta

iTrader: (0)

Garage List
2006 BMW 325i  [0.00]
2006 BMW 325i  [0.00]
I thought BHP didn't refer to where it measured (i.e crank, wheels etc..) The actual original measurement is probably in kW or PS, this being the european standard. From memory 1PS = 0.985 bhp
__________________
__________________________________________________ __________________
2006 BMW 325i, Jet Black, 6MT, ZSP, Black Leather, Aluminum, Power Seats, Logic 7
Appreciate 0
      07-17-2006, 10:25 AM   #9
Sedan_Clan
Law Enforcer
Sedan_Clan's Avatar
Brazil
4272
Rep
15,598
Posts

Drives: '17 Nardo Grey M4
Join Date: Jun 2006
Location: On 2 wheels clipping an apex!

iTrader: (26)

Couldn't we all agree that somebody who is ignorant of the facts isn't intentionally lying????
Appreciate 0
      07-17-2006, 10:46 AM   #10
KennyVendetta
Salsero
KennyVendetta's Avatar
United_States
29
Rep
260
Posts

Drives: 335 Crimson Red
Join Date: Mar 2006
Location: San Diego, CA

iTrader: (0)

Quote:
Originally Posted by bruinbear
I test drove a 325i this morning and the sales associate said that BMW measures their horsepower by the output from the wheels and not the output from the engine. Is this true or is he trying to pull my leg?

This is my first post and I don't know if this has been answered or is common knowledge, so bear with me please.

By the way the 325i is one nice car!
We are bearing with you Bruinbear....lol.

Do not purchase the 325...wait for the 328 in 2 months.
Appreciate 0
      07-17-2006, 11:11 AM   #11
NFS
Major General
NFS's Avatar
United Kingdom
195
Rep
9,218
Posts

Drives: M340i
Join Date: Jul 2006
Location: UK

iTrader: (0)

Quote:
Originally Posted by whippersnapper
I thought BHP didn't refer to where it measured (i.e crank, wheels etc..) The actual original measurement is probably in kW or PS, this being the european standard. From memory 1PS = 0.985 bhp
Nope BHP is specifically measured with the engine NOT under load - ie ignores water pump, gear box, crankshaft, alternator etc...
Appreciate 0
      07-17-2006, 11:36 AM   #12
whippersnapper
Captain
whippersnapper's Avatar
United_States
18
Rep
972
Posts

Drives: people mad
Join Date: Jun 2006
Location: Atlanta

iTrader: (0)

Garage List
2006 BMW 325i  [0.00]
2006 BMW 325i  [0.00]
you learn something everyday. Thanks
__________________
__________________________________________________ __________________
2006 BMW 325i, Jet Black, 6MT, ZSP, Black Leather, Aluminum, Power Seats, Logic 7
Appreciate 0
      07-17-2006, 11:58 AM   #13
Asiann
Got Seoul?
United_States
81
Rep
2,862
Posts

Drives: 2012 535i MSport
Join Date: Dec 2005
Location: Honolulu

iTrader: (0)

Garage List
2012 BMW 535i  [0.00]
2008 750Li  [0.00]
2006 BMW  [0.00]
Quote:
Originally Posted by KennyVendetta
We are bearing with you Bruinbear....lol.

Do not purchase the 325...wait for the 328 in 2 months.
Now if he wants to save some money and try to catch a better deal go with the 325.
__________________
Can you say Alooooha?
[SIGPIC][/SIGPIC]
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:41 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST