Me too and 100% agreed.

If the F10 M5 only really made 560 hp at the crank, then a bone stock E60 M5 WILL pull it in the triple digit speeds easily and THAT is something that BMW M won't allow.

 

After driving it I have no doubt. I bet it is closer to 560 at the wheels than at the crank!

 

Does anyone really think that the M5 isn't running has at least 600 crank HP? I mean, seriously, there is no way that 560 HP results in the kind of performance that people are recording. It's just basic Physics. Looking at the trapspeeds and 100-200 kph times, it is pretty obvious. This will undoubtedly be verified by independent dyno results, showing some 500+ HP to the rear wheels.

I'm speaking as an engineer who has done consulting work for some of the major car companies (and a degree in physics). Given the extensive modifications to the X5/6 M engine, who really thinks this resulted in only 5 hp? It's actually pretty funny, and I'm sure the M engineers are getting a kick out of all the discussions on how a 4,300 lb car car run as fast as a Porsche GT2 with only 560 HP.

Given the modifications, I would guess the M5 is running close to 620 HP. I'm especially looking forward to Gustav's airstrip runs.

Run as fast as a GT2,,,,,Give me a break!

 

+1 GT2 trapped at 128mph according to Motortrend

while i do think it has about 600hp atleast the ones delivered to the magazine do anyway......:haha2:

don't mistake a meaty power curve for peak power......

 

Does anyone know the tentative release date for the US? I will post dyno graphs once I can get my hands on one. I bet it is at least 500whp.

 

Or could it be that BMW are sending pre-production ringers for testing? I actually believe the 552 bhp (560 ps) is an accurate figure based purely on the figures the CLS 63 PP puts down with similar power. I know Insideline.com always puts their test vehicles on a dyno, so it will be interesting to see what they come up with.

 

Its a monster period - love it dearly! Really looking forward to owning one some day!

 

Or then again not...

Please go to this thread.
http://www.m5board.com/vbulletin/f10-m5-discussion/197987-stock-f10-m5-dyno.html

Not quite the 620-650 bhp you suggested.
http://www.m5board.com/vbulletin/f1...scussion/197432-sport-auto-reports-12-9s-f10-vs-15-6s-e60-hockenheimring-2.html

 

Those type of dynos where they come up with the crank horsepower are just not accurate. Their calculation is based on a "coast down method"...where they run the dyno as usual....and then once the run is done to redline...they throw the car in neutral and measure how fast the car's wheels coasts down to a stop on the rollers. What they don't tell you is that there are "estimates" in the way the computer calculates the so called "crank horsepower" figures. There are just too many variables for it to accurately measure the crank horsepower properly. It is about as accurate as me saying all rear drive manual transmission cars have 15% parasitic loss when measuring hp on a Dynojet dyno....

Tom

 

F10 M5 is definitely underrated.

Just use the N54 as a comparison.

 

As another poster commented...I'm not saying it does or it doesnt have 600hp, BUT, other cars weighing similar amounts (CLS63, E63, Pana Turbo) are laying down similar times with similar HP and similar weight. So why does it "have to" have 600hp to do those times? It might...but then again so might the others cars ;-)

 

Tbh, I'm not that bothered about the power, we know it will be fast, the E60 was no slouch. The question is will it be fun to drive? Have M done anything to try and counter the weight increases in terms of handling?

I haven't driven the car but am yet to read a single article that actually applauds the F10 for its handling, balance or suggests the car doesn't feel its weight and size.

So whether it has another 50 BHP or not is a bit immaterial tbh, however there is actually no reason to suspect it does. The only reason to suggest it is if you have just ordered a brand new one and want to justify your decision.

And we need to get over all this nonsense about the F10 being as fast as a GT2, Veyron, 458 etc etc. IT IS NOT.

Its about as fast as its immediate competition, give or take. And at least two reviewers (Autocar and Pistonheads) rate the E63 AMG as being better than the F10

 

I have read at least 5 articles stating that the f10 feels nothing like its weight and size and those mags both said the f10 was faster and better handling, but not as loud or brutal feeling. Depends if you want to draw attention, I suppose. I would rather be stealth in a superior machine.

 

I<b> have read at least 5 articles stati

 

It's all in the tech...

I don't think it has more power than stated. As others mentioned, its direct competitions are showing similar results. Folks, we simple are in a time where cars have gotten seriously faster, thanks to technology. Just read that the 2013 GT-R does 60mph in 2.8 secs yet only rated at 545hp. That's 0.9 secs faster than the F10 M5.

As to the comment about no mention of the F10 having good handling/weight size balance...have you seen the Stig's video driving the F10 M5? :biggrinbounce:

Drive any F01 to see what BMW has done with weight/size/balance feel. I drove a 740Li and it felt much like an E90.

 

I don't think it has more power than stated. As others mentioned, its direct competitions are showing similar results. Folks, we simple are in a time where cars have gotten seriously faster, thanks to technology. Just read that the 2013 GT-R does 60mph in 2.8 secs yet only rated at 545hp. That's 0.9 secs faster than the F10 M5.

As to the comment about no mention of the F10 having good handling/weight size balance...have you seen the Stig's video driving the F10 M5? :biggrinbounce:

Drive any F01 to see what BMW has done with weight/size/balance feel. I drove a 740Li and it felt much like an E90.

Yes, BMW engineers have always done a good job with the handling of their cars, and a superlative job when setting up the suspension of their M car fleet. I have no erason to think they are going to disappoint on that score.

No matter what the power, the low down torque, and a DCT transmission certainly help the acceleration times. But even if "only" 560 ish horspower, they have given a terrific platform to up the power for tuners. No doubt there will be tweaks out shortly taking it well over 600 hp if it isn't there already. This will not be a slow car........

Regards,
Jerry

 

Engine Tune

It would be very tempting, indeed, to tune the beast...
Yet, I am having second thoughts lately, having watched all them videos of burning tires.
Can the rear wheel drive handle more power?

I personally wouldn't mind all wheel drive, given they do it right.
Then all bets are off, I want 1000 HP. :noSMG:

 

I'm a bit out of my element concerning dynos...
But aren't the cars run stationary on a dyno?
Wouldn't that automatically decrease the amount of power output due to the lack of air flow?

 

large fans are often used for air flow

 

someone delete this post

 

I believe the M5 has close to 560hp, maybe alittle more, but not over 580. The important thing is what is the minimum power after gearshifts, the power curve is soo good, same power 6-7k rpm, and 7 speed ultra quick gearbox, maybe the power is around500-580hp under full acceleration...

To compare a GT2 with 530hp, that car might have 450-530 hp under full acceleration (450hp after a gearshift).

 

Its not all about how much hp you have getting it to the wheels is more important and getting traction can make al the difference. I want to see what they COULD get the hp to though. I bet this thing could push 650 wheel easy with a tune and bigger intakes and exhaust