V8 M3 not that fast ...

Garden Router said:
Seems legit. I was speaking from experience - once pushed an Aston Martin DB7 on a dyno so that the speedo needle came full circle and hit up against the back of the "0" pin / stop! Those days we didn't have digital cameras, so I can't prove it.
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I can do that in my Hilux... it goes to 180 on the speedo... and the Hilux goes to 180... although they say top speed is 177 or some such,
 
xrapidx said:
I can do that in my Hilux... it goes to 180 on the speedo... and the Hilux goes to 180... although they say top speed is 177 or some such,
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remind me never to buy your Hilux...
 
Yesterday morning on the german autobahn...max i did was 333 km/h...was a bit tricky to take pictures...so sorry for the unsharp quality!
car does on the flat around 320-325...the 330 was slightly downhill...
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Sorry to say, but what an absolute moron! Take your own life into your hands no problem but what about the other innocent people on the road?

Manufacturers already do the test to show what max speed are car can do so why the need to see it for yourself? Really if this is what it takes to prove you are a man then you have issues.... (Just to avoid confrontation, this does not refer to the OP but the guy who took these pics)
 
Something I don't get either... keep speeding for the track... I'm not competely innocent, but my main speeding is done over-taking.
 
Looks photoshopped - everything shaking except for the speedo numbers. And the needles seems pretty sharp. Looks cropped to avoid showing any pic outside of the cabin...
 
possible conclusions:

guy is nuts and a speed freak or:

guy has 2" weenie, good pals with the guys at his local dyno garage, or:

knows his way around photoshop...

I suspect the 1st: He just has a FAST car.
 
adamr said:
wont it overheat and stuff on a dyno like this ... no air coming into the car ... the car has been delimited ... but yes i doubt it would see 330km/h ... the owner did say it was on the autobhan on a slight downhill straight ... the oil temp settings are normal under load

the MDM is on ... that is the M traction setting, if on a dyno, dont see the point in doing this ... but still 330km/h even downhill ... i dunno ... need to see the video ...
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Using my best final year physics, I doubt if the car will do more than 307km/h true speed on the road (don't think the speedo will register 325-330km/h then).

Obviously without limiter. It is quite easy to (fairly accurately) compute the speed that x additional kW will bring about: Take 309kW/160kW (the power differential between the M3 and the unrestricted 325coupe - can't use the 335 because it is restricted). Power the result to power 1/3 (it takes 2^3=8 times as much pwer to double a car's top speed). Multiply this by the lower speed and your will see what the theoretical top speeds is that the more powerful car will have. It is actually amazing how accurate this is, using the BMW online brochure. E.g. calculting the theoretic top speed of say a 325 vs a 320 using this formula and the respective power outputs, only differs with 1 or 2 km/h. In my opinion the M3 will actually be slower than 307km/h because of its higher frontal area (wider wheel arches and fatter tyres), so 300 km/h will probably more realistic.
 
Hannes said:
Using my best final year physics, I doubt if the car will do more than 307km/h true speed on the road (don't think the speedo will register 325-330km/h then).

Obviously without limiter. It is quite easy to (fairly accurately) compute the speed that x additional kW will bring about: Take 309kW/160kW (the power differential between the M3 and the unrestricted 325coupe - can't use the 335 because it is restricted). Power the result to power 1/3 (it takes 2^3=8 times as much pwer to double a car's top speed). Multiply this by the lower speed and your will see what the theoretical top speeds is that the more powerful car will have. It is actually amazing how accurate this is, using the BMW online brochure. E.g. calculting the theoretic top speed of say a 325 vs a 320 using this formula and the respective power outputs, only differs with 1 or 2 km/h. In my opinion the M3 will actually be slower than 307km/h because of its higher frontal area (wider wheel arches and fatter tyres), so 300 km/h will probably more realistic.
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true top speed ungoverned on an M3 is 305km/h ... so you spot on sir!!! ;)
 
Adam on the Dolphin M3s there was a "test" button that was used to test the gauges and can make the clock show 280Kmph BUT all the clock showed full ie the Speedo, The fuel, the temp and rev counter even though the car is standing still.... whats that button called?
 
Garden Router said:
Yes - the drive wheels turn two rollers which are loaded to simulate hils, up, down, etc. Big fan is placed in front of car to simulate, well, wind. For all the car knows, it's doin' 330 kmph... I hate dynos - so scared the rollers are going to seize and chuck the car forward through the wall...
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LMFAO!!!
 
JK8 said:
Adam on the Dolphin M3s there was a "test" button that was used to test the gauges and can make the clock show 280Kmph BUT all the clock showed full ie the Speedo, The fuel, the temp and rev counter even though the car is standing still.... whats that button called?
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seen it done ... iits a combo of buttons you have to press to get the speedo to do that test ... i dunno what the combo is ... :(
 
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