Are BMW horses bigger than Mercedes'? (M6GC Chris Harris)
Discussion
-Z- said:
The yanks seem to accept that the M5/M6 have over 600bhp as standard.
Any one on here dyno'd one - especially at Surrey Rolling Road?
motortrend dynod the m5 in a test vs e63 s awd ,the bmw produced what it said,the merc was producing 620bhp,they did it because the merc did a 0-60 in 3.2 and the 1/4 mile in 11.7 they dint believe it was 'only 585bhp' and yes I know it doesnt tally up with ch video. Any one on here dyno'd one - especially at Surrey Rolling Road?
Both the UK Sakhir Orange M6 Gran Coupe press vehicles have the following option
Pressefahrzeug
- Leistungsgepruefter Motor
Which translates to 'Press vehicle - Performance Tested Engine'.
I suspect that the press cars are putting out quite a bit more than standard customer cars. The same probably applies to AMG too. Sometimes a 'Press car' will be put against a 'Customer car' and then the official figures don't stack up.
In reality, all three of the cars tested are pretty bloody good, and ballistcally fast. So are the Audi RS7, Porsche Panamera, Aston Rapide etc. The choice will come down to personal preference, looks and cabin ergonomics are very subjective. I'm happy with my choice, and I test drove the others.
Pressefahrzeug
- Leistungsgepruefter Motor
Which translates to 'Press vehicle - Performance Tested Engine'.
I suspect that the press cars are putting out quite a bit more than standard customer cars. The same probably applies to AMG too. Sometimes a 'Press car' will be put against a 'Customer car' and then the official figures don't stack up.
In reality, all three of the cars tested are pretty bloody good, and ballistcally fast. So are the Audi RS7, Porsche Panamera, Aston Rapide etc. The choice will come down to personal preference, looks and cabin ergonomics are very subjective. I'm happy with my choice, and I test drove the others.
Interesting, though not surprising.
Wouldn't it be fantastic is one of the car shows/magazines/trading standards had enough balls to independently test a number of manufacturers 'press' cars vs customer cars and present the results to the public.
The manufacturer performance testing the engines of press cars is an obvious thing to do - it would help nobody the car sitting on the back of a recovery vehicle due to an faulty part - but at the same time it is bordering on the dishonest if they truly are presenting heavily tuned cars as those that can be purchased 'off the peg' by UK buyers.
Wouldn't it be fantastic is one of the car shows/magazines/trading standards had enough balls to independently test a number of manufacturers 'press' cars vs customer cars and present the results to the public.
The manufacturer performance testing the engines of press cars is an obvious thing to do - it would help nobody the car sitting on the back of a recovery vehicle due to an faulty part - but at the same time it is bordering on the dishonest if they truly are presenting heavily tuned cars as those that can be purchased 'off the peg' by UK buyers.
I guess with a high performance engine there is always going to be some variability.
What I think would be interesting would be if a tuning company could compare the engine map of a customer and press car. That would show if the 'Performance Testing' was just to ensure a good representative sample or if there was actually some positive action to ensure 'good' performance.
What I think would be interesting would be if a tuning company could compare the engine map of a customer and press car. That would show if the 'Performance Testing' was just to ensure a good representative sample or if there was actually some positive action to ensure 'good' performance.
Really, you have to consider the whole drivetrain, not just a peak output value.
The quoted hp figure will be a DIN crank value. What actually makes it through to the road is a different question entirely.
Not only do you have drivetrain losses, but the gearing will change the actual thrust at the wheel, the physical force capable of being provided. Although the BMW and Merc have the same number of available ratios, the BMW could have lower ratios for 1st to 5th, and then a stretch to 6 and 7, giving relaxed cruising, but also a ballistic 0-120 time at the expense of an oddly large rev drop into 6th.
Anyone who's quite as anal as me about their gearbox setup in Gran Turismo will be able to relate to this...
The quoted hp figure will be a DIN crank value. What actually makes it through to the road is a different question entirely.
Not only do you have drivetrain losses, but the gearing will change the actual thrust at the wheel, the physical force capable of being provided. Although the BMW and Merc have the same number of available ratios, the BMW could have lower ratios for 1st to 5th, and then a stretch to 6 and 7, giving relaxed cruising, but also a ballistic 0-120 time at the expense of an oddly large rev drop into 6th.
Anyone who's quite as anal as me about their gearbox setup in Gran Turismo will be able to relate to this...
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