Login


09212011, 04:20 PM  #23 
Captain
16
Rep 910
Posts 
I did and first.
More curious what the corresponding wheel torque is for the M5 at 3.5K in 1st and in 2nd.
__________________
E90 M3: Some cool stuff...more to come
Ducati 1199 Panigale: Bucket full of mods 
Appreciate
0

09212011, 05:40 PM  #24 
Captain
16
Rep 910
Posts 
I see what you're getting at, which leads me to a question related to not understanding what Tq figure a dyno spits out. Essentially, when we dyno our cars, despite the common understanding that we are getting a power at the wheel representation, what we are actually getting is horsepower at the wheel and torque at the flywheel. Torque at the wheel is closer to 5,500 at 3.5KRPM (first gear). Do I have that right?
http://www.m3post.com/forums/showthread.php?t=107532
__________________
E90 M3: Some cool stuff...more to come
Ducati 1199 Panigale: Bucket full of mods 
Appreciate
0

09212011, 06:02 PM  #25  
that's what SHE said!
39
Rep 1,122
Posts 
Quote:
I've said it in the pas and I'll say it again, M3 has gobs of torque, and it has it everywhere. If you disagree, answer me this, if the M3 is both heavier and has less torque than a 335i, how does it out accelerate it (stock for stock)???
__________________


Appreciate
0

09212011, 06:11 PM  #26  
Captain
16
Rep 910
Posts 
Quote:
3.99*3.62*260 = 3,755 M5 Crank Tq taken from the dragtimes: http://www.dragtimes.com/2006BMWM5...aphs9623.html Result @ 3.5K in first gear: M3 Wheel Tq = 5,500; M5 Wheel Tq = 3,755 M3 wins!
__________________
E90 M3: Some cool stuff...more to come
Ducati 1199 Panigale: Bucket full of mods Last edited by Dodge2Dub; 09212011 at 06:54 PM. 

Appreciate
0

09212011, 06:55 PM  #27  
that's what SHE said!
39
Rep 1,122
Posts 
Quote:
__________________


Appreciate
0

09212011, 11:52 PM  #28 
ESS Dreaming
15
Rep 870
Posts 
Ive owned an M6 and am now on my second e92 M3. The M6 was faster 3 gear and above vs my DCT M3. The SMG tranny on the M6 however ruined the whole car for me. I never drove a 6MT with the V10 but imagine thats the ticket though...
Oh and there is no question, the M3 is a million times more fun to drive and I would rather have one any day of the week. ( Again, this is coming from someone who owned both) 
Appreciate
0

09222011, 12:09 AM  #29 
Banned
42
Rep 1,109
Posts 
So my understanding from this thread is that through 1st and 2nd while rippin through the gears the m3 is faster or atleast as fast as the m5. After that 3rd and beyond the m5 pulls hard away.
Also to the above poster regarding comparing wheel torque at 3.5k RPMS. You really cannot compare single points at certain single rpms to one another. You have to do an area under the curve in order to accurately represent things. This is not overly hard to do since the graph of the m3 is actually so linear you can simply use normal math of a square, dividing it by 2 to get a triangle compared to linear regression needed to calculate the m5s wavy curve AUC> Nonetheless what you compare is a real life scenario which is 6k8400 rpms for the m3 and 5.58200 for the m5. These are the useable rpms at full throttle and the rpms do not drop below about 5.56 for either of them in full throttle pulls. The only time is for an INSTANT from a standstill but it hits 6k in the blink of an eye. So the AUC of 5.58400 is what you would compare to the m5 5.58200 AUC. I am willing to bet the 1st gear AUC is likely almost identical giving the shorter gearing in the m3. Gearing has a huge multiplication effect. Which is why some people do not understand that it is almost always more beneficial to take a car to its redline even if its not making as much engine power. Staying in a lower gear longer multplies torque by so much more than the power you lose being out of your "power curve" After 2nd I would think the m5 would really have much larger numbers and then from there on out it would be no contest 
Appreciate
0

09272011, 08:18 PM  #30 
Lieutenant
13
Rep 559
Posts 
drove a friends m5 for about 15 minutes.
1) definitely more torque, not much, but through the rev range 2) more torque, but the cars a pig, so honestly, the speedo looked about the same as an e92 m3. 3) past 80,90mph don't even think about it. At that speed weight simply doesn't matter, displacement / horsepower wins. e60 m5's are ridiculous up top.
__________________
2007 Z4MC  AW/Blk Extended/Prem Pkg/Carbon Int H&R CoilsHRE 545'sAFE IntakeRPI ScoopCustom CatbackTekcarbon HL Mod Stubby AntennaVinyle'd Roof + BumperMstache V2RacingBrakes Rotors + Stud Kit 
Appreciate
0

09272011, 09:18 PM  #31 
Major
63
Rep 1,202
Posts 
i know this is stock vs stock discussion.....but this past weekend had a run in with an m5....im the camera car and the M5 is modded (tune, full exhaust, intakes, scoops)......ive beaten stock M5's with my M3 dct.....but this M5 was surprisingly fast stock the M3 will lose everytime, and if its 6MT it stands no chance...but a modded dct will put up a good fight (btw the middle car wasnt racing, just honked it off) 
Appreciate
0

09272011, 10:16 PM  #32 
Private
2
Rep 89
Posts 
From physics:
Power at the wheel = Power at the engine x Gear Ratio; so gear ratio at speed plays important role Acceleration = Power at wheel / Weight ; lower weight has the same effect as higher power Numbers from Car & Driver magazine: 100150mph time = (0150) time minus (0100) time: Z4M : 21.5s, 32.911.4 (C&D, June'06), 330HP, 3300lb 2008 M3 6spd: 15.1s, 24.9  9.8 (C&D, May 2008), 414HP, 3700lb C6 LS3 Z51 : 14.3s, 23.5  9.2 (C&D, Sep'07), 436HP, 3300lb 2011 GT500 :14.5s, 23.6  9.1 (C&D, Aug'10), 550HP, 3800lb E63 AMG : 13.9s, 23.4  9.5 (C&D, Dec'09), 518HP, 4200lb Jaguar XFR : 13.4s, 22.9  9.5 (C&D, Dec'09), 510HP, 4400lb CTSV : 12.8s, 22.3 9.5 (C&D, Dec'09), 556HP, 4300lb Panamera Turbo : 12.2s, 20.4  8.2 (C&D, Apr'10), 500HP, 4300lb M5 6spd manual : 13.1s, 23.4  10.3 (C&D, Feb'07), 500HP, 4200lb M5 SMG : 11.3s, 20.7  9.4 (C&D, Jan '06), 500HP, 4200lb 2008 911GT2 : 9.9s, 18.0  8.1 (C&D, Aug'08), 530HP, 3300lb 2008 ACR : 9.8s, 17.5  7.7 (C&D, Aug'08), 600HP, 3400lb 2008 C6 Z06 : 9.6s, 17.9  8.3 (C&D, Aug' 08), 505HP, 3100lb 
Appreciate
0

10032011, 06:22 PM  #33 
ASE93
8
Rep 80
Posts 
[/quote]
The 'throw' is much greater with power button on... and what's crazy is 3rd
__________________
E93/ 6MT/ Fabspeed Catback/ Fabspeed XPipe/ Dinan Intake/ Active Autowerke Tune/ Hamann Rear Diffuser/ Chrome black Kidneys/ K40 with laser Jammer/ 15% tint

Appreciate
0

10042011, 09:29 AM  #34 
Banned
164
Rep 8,514
Posts 
i think you're referring to a car who's setup defaults to 400 hp, with the power button, it increases it to 500 hp. I would say 100 hp increase could be felt, lol

Appreciate
0

Post Reply 
Bookmarks 
Thread Tools  Search this Thread 

