M5 Powertrain Performance graph - M5

[Zafiro]

http://www.rototestinstitute.org/popup/popupmodeloverview.php?ChartsID=153

Power: -7% lower than BMW claim
Torque: -9% lower than BMW claim


More cars: http://www.rototestinstitute.org/index.php?DN=29

 

[Deutsch]

can't believe everything you read.

 

[Zafiro]

can't believe everything you read.

what do you mean?

see link for more cars http://www.rototestinstitute.org/index.php?DN=29

 

[Top Secret]

That's at the wheels though - of course you're going to get a loss.

 

[Zafiro]

TEST INFORMATION:
http://www.rototestinstitute.org/index.php?DN=28

 

[Zafiro]

All cars been tested the same way and under the same conditions. So far I havent found any car with more power than the factory claim.

Corvette C6: -10% / -11%
CLS55: -5% / -8%
Boxster S 3.2 -05: -9% / -7%
Golf R32 -05: -10% / -8%

Seriously tuning: Mitsubishi Lancer Evolution VI -00: 529hp, 570Nm

 

[EnI]

From Rototestinstitute:

Powertrain Performance definition Rototest Research Institute defines Powertrain Performance™ as the engine performance reduced by the losses through the drivetrain (transmission, differential, joints, etc). Simplified - Powertrain Performance is the performance available to the wheels.

The specs all car manufacturers give are engine performance specs, not powertrain performnce ones!

On the way from the engine to the wheels some power/torque losses occure, so it's natural performance spec are lower when measured at the wheels.

 

[Deutsch]

From Rototestinstitute:

Powertrain Performance definition Rototest Research Institute defines Powertrain Performance™ as the engine performance reduced by the losses through the drivetrain (transmission, differential, joints, etc). Simplified - Powertrain Performance is the performance available to the wheels.

The specs all car manufacturers give are engine performance specs, not powertrain performnce ones!

On the way from the engine to the wheels the power/torque some power/torque occure, so it's natural performance spec are lower when measured at the wheels.

Thank you Tine!

 

[Zafiro]

Whats good with this page is that there are more cars and they are all tested the same way and under same conditions. So start comparing

these are few examples

Corvette C6: -10% / -11%
CLS55: -5% / -8%
Boxster S 3.2 -05: -9% / -7%
Golf R32 -05: -10% / -8%

 

[Porsche Guy]

I remember reading an article interviewing Dinan, the BMW tuner, and he talked about how hard it is to replicate the same HP numbers manufacturers get because of how controlled manufacturers' test environments are, including cooling, humidity, temperature, altitude, and the list goes on.

 

[Yperion]

That's at the wheels though - of course you're going to get a loss.

That's right. Manufacturers measure the engine's power at the workbench while car magazines measure the power from the wheels.