The M5 is only slightly heavier than the M3, with an additional 135 kW, a 378 kW MONSTER of an engine, with a new faster shifting 7spd SMG 'box, shorter gear ratios, and that magnificent M differential.. no car manufacturer puts power on the road like a BMW, especially an M car.. The E55 is heavier than the new M5, with 23 kW less power, crappy auto 5spd 'box and NO, repeat NO M differential.. and electronic gadgetry that cannot put the power on the road..
And YET.. is can do a 4.7 0-100 Kph
SO this is why I say think LOGICALLY about it.. as I'v said im my previous thread.., BMW ARE playing games with the public.. the new M5 will run way faster than the current times floating around.. Its just marketing.. they are going to give merc and audi and some sports marques a whack from behind..the facts are there for all to see.. its LOGICAL!! There is NO WAY the E60 M5 with all that power can run the same time as the M3.. NO WAY!! Just wait and see..
I'm no engineer but 0-60(mph) or 0-100 (kph) times are affected greatly by the gear and rear end ratios used aren't they? A car with more torque/ horsepower than another can have slower acceleration times because of differences in gearing and/or rear end ratios. Don't we have to wait for those before trying to make comparisons of acceleration times?
ChuckG
"03 M5 Carbon Black
Acceleration time is dependent on torque/weight - not horsepower - of a given engine. Also, we're getting to the point where traction of current tire technology is being reached and therefore the greatest limiting factor in acceleration.
Someone need to go back to class because this is just plain wrong. Do a search here and you will read a number of posts on the subject.
By your logic a 530d should be faster than the old M5. Wrong now isn't it...
__________________
HP wins races, if you know how to drive and shift. Torque is for old men driving around town pretending.
The clutch pedal is a throwback to the days of carburation and OHV engines. It has served us well but its time to let go and embrace the future.
With a declared Nurburgring Lap Time of 7:55, the acceleration from 0-100 km/h has to be at least 4,3 sec.
I bet the Geneva data is the true.
One possible reason: They heard MB will bring the CLS55. Now they are playing cat'n'mouse!
The 0-100km/h and nurburgring times are almost totally unrelated, since you don't start from a stop on the ring and you don't use 1st gear either!!
Quote:
Originally Posted by Enigma
Someone need to go back to class because this is just plain wrong. Do a search here and you will read a number of posts on the subject.
By your logic a 530d should be faster than the old M5. Wrong now isn't it...
Its not completely wrong but a bit misleading. Everyone should remember to consider the whole package (engine torque & power curves,gearbox & diff ratios, tyre sizes, tyres quality, mass, inertia, efficiencies etc etc etc)when analysing performance potential. A good "approximation" is Power/Weight though.
If the diesel would rev 8250rpm it would be a chance....lol
Alpina B7 - 500 hp, 700 Nm, 2056 kg, 0-100 km/h 4.6 s, 0-200 km/h 14.6 s.
This car has 4.1 kg/hp, M5 has 3.5!
I think M5 performance will be even better than 4.7 and 14.4.
Thats one heavy car almost an AMG!!! What engine is used in that car is it NA? On another look of the numbers, hmm i doubt it. It probably doesn't have 7 speeds either.
Numbers are influenced greatly by road and ambient conditions which throws another spanner in the works.
Either way the M5 will be quick and for the most part unusable unless your clever and avoid the usual risks of coppers spoiling the fun.
just reading the opening statement- you are missing one important parameter. torque. from 0-60 tq is what really moves your car. and the m5 has far less than the e55. once speeds go over 5000 rpms and stay there- everything else equal, the higher hp car has the advantage.
Someone need to go back to class because this is just plain wrong. Do a search here and you will read a number of posts on the subject.
By your logic a 530d should be faster than the old M5. Wrong now isn't it...
Well, it's not completely wrong. From a standing start, the torque the engine makes along with weight and mechanical advantage (gearing) will have the most significant effect on elapsed time/distance. You will frequently see diesel cars with very low 0 - 50 kph times. However, once rolling, the parameters affecting accleration are much more complex, i.e., force needed to overcome wind-resistance and continuing to ACCELERATE mass are not linear equations. On-the-road acceleration is much more dependent upon the peak engine output, i.e., HP. Wow, I must have had very little sleep on-call last night..........
Re: Think LOGICALLY about the M5 performance data
max_m5 
Linear Mode
