2013 Audi A3

BMW 335i dyno’d again with better results

 
2 2,560 views Sep 22, 2006

BMW 335i dyno’d again with better results

BMW 335i dyno’d again with better results

Enlarge Photo
You may remember our previous story about the BMW 335i being run on a dynometer and displaying some impressive figures. In the earlier tests, the 335i made 275hp and 406Nm torque at the wheels. Estimating drive-train loss of roughly 15-25%, this equates at close to 320hp-350hp and 480Nm of torque at the flywheel.

Automobile mag went back to the dynometer and tested the 335i again, this time under cooler conditions that would yield better figures. The 335i managed to get 285hp, then 282hp, and finally 287hp, which is even more impressive than the last unit. Finally, they found one case where the 335i peaked at almost 300hp at the wheels, which puts actual output at close to 375hp. It looks like BMW engineers have seriously underrated this engine.

[Source: Automobile Magazine]



Posted in:
 
Contribute
Send us a tip Comment Contact the editor
Follow Us

 

Have an opinion?Join the conversation!

  • Posting indicates you have read this site's Privacy Policy and Terms of Use
  • Notify me when there are more comments
Comments (2)

  1. By Robyn Posted: 9/18/2007 1:05pm PDT

    You are saying the car made 275whp wheels and estimate 350hp at the crank, you are talking rubbish. If that is the case a 75hp engine in this car wont move at all because all the power is loss. Loss at the wheels is a constant hp not in % figure. Also following your theory if you were to boost up this car to 1000hp the loss is about 200~250hp. again, rubbish!
     
    Post Reply
    Vote
    Bad stuff?

  2. By FMOS Racing Posted: 12/22/2009 5:34am PST

    Robyn, you are apparently NOT a mechanical engineer. Pumping losses and friction losses are percentages of total. The harder the push, the greater the loss. Generally manual transmission vehicles lose ~15% though the driveline, which means a 275 rwhp MT vehicle is making ~325 hp at the crank. A 300 rwhp MT vehicle is making ~353 hp at the crank. Modern automatics lose ~20% due to additional hydrodynamic pumping losses.
     
    Post Reply
    Vote
    Bad stuff?

 

Have an opinion?Join the conversation!

Connect with Facebook

Motor Authority. Now with your friends.

Discover stories your friends read.
Share stories more easily.
You control what you share.
Learn more

Research New Cars

Go!


More from High Gear Media

 
 
MotorAuthority
  • Follow Us
  • Twiiter
  • Facebook
 
 
© 2011 MotorAuthority. All Rights Reserved. MotorAuthority is published by High Gear Media. Stock photography by Homestar, LLC. Send us feedback.