Top Speed hit in your m3? (legally) - Page 2

Veegie · 09-24-2012, 09:13 PM

Quote:

Originally Posted by Detroit M3

The altitude of where you tried to achieve this plays a role in your results. If your m3 is not tuned I believe the car cuts off at 155mph. If you're tuned I think 185mph is the max and as for Ess I GUESS over 200mph

That is correct.
The physics, disregarding small factors like rolling resistance at top speed:
Assuming the following:

340whp
2.17m² frontal area
0.31m² drag coefficient
1.219kg³ air density
Optimal gearing
Flat surface

... you could achieve a theoretical 190.58mph.

If you have other figures you'd want me to throw in there, I'd be happy to do it. The math is really straight forward, I just coded a simple program to handle it for me to avoid manual-data entry.

1MOREMOD · 09-24-2012, 09:52 PM

most ive seen is 139.4 gps verfied on front straight of pacific raceways.

e92doc · 09-24-2012, 10:02 PM

138ish at Wakins Glen yesterday on the straight after the esses before the bus stop - 3 times

HotIce · 09-24-2012, 10:12 PM

Quote:

Originally Posted by tom @ eas

211mph on the dyno:

That M3 went to 80 in no time...oh my..

HotIce · 09-24-2012, 10:13 PM

Quote:

Originally Posted by Veegie

That is correct.
The physics, disregarding small factors like rolling resistance at top speed:
Assuming the following:

340whp
2.17m² frontal area
0.31m² drag coefficient
1.219kg³ air density
Optimal gearing
Flat surface

... you could achieve a theoretical 190.58mph.

If you have other figures you'd want me to throw in there, I'd be happy to do it. The math is really straight forward, I just coded a simple program to handle it for me to avoid manual-data entry.

Your brain, I want it.

TTO898 · 09-24-2012, 10:34 PM

Quote:

Originally Posted by NoM3ForMe

Holy shit!

That's exactly what I said as I watched. Ridiculous!

NoM3ForMe · 09-24-2012, 10:36 PM

Quote:

Originally Posted by Veegie

That is correct.
The physics, disregarding small factors like rolling resistance at top speed:
Assuming the following:

340whp
2.17m² frontal area
0.31m² drag coefficient
1.219kg³ air density
Optimal gearing
Flat surface

... you could achieve a theoretical 190.58mph.

If you have other figures you'd want me to throw in there, I'd be happy to do it. The math is really straight forward, I just coded a simple program to handle it for me to avoid manual-data entry.

I love when other math-/physics-geeks chime in. I write stand-alone code to do crap I don't want to type out myself all the time

Mike Benvo · 09-24-2012, 10:56 PM

I've hit close to 187 in my car via gps, but this is the fastest I have a picture of (taken by my passenger of course):

This was probably around 170mph given how inaccurate the speedo is on top.

///M Rakete · 09-24-2012, 11:51 PM

272 KPH or 170 MPH speedometer indicated in a Sixt rental M3 on the A1 by the 'Ring. Car was riding up against the limiter which felt weird going downhill.

Probably a real 155 MPH as I doubt the limiter had been removed.

Detroit M3 · 09-24-2012, 11:52 PM

Quote:

Originally Posted by Veegie

That is correct.
The physics, disregarding small factors like rolling resistance at top speed:
Assuming the following:

340whp
2.17m² frontal area
0.31m² drag coefficient
1.219kg³ air density
Optimal gearing
Flat surface

... you could achieve a theoretical 190.58mph.

If you have other figures you'd want me to throw in there, I'd be happy to do it. The math is really straight forward, I just coded a simple program to handle it for me to avoid manual-data entry.

Very nice, smart man.

Quote:

Originally Posted by HotIce

Your brain, I want it.

hahah +1

Quote:

Originally Posted by Mike Benvo

I've hit close to 187 in my car via gps, but this is the fastest I have a picture of (taken by my passenger of course):

This was probably around 170mph given how inaccurate the speedo is on top.

Wowzers!!!

Sapper_M3 · 09-24-2012, 11:57 PM

Just yesterday, I maxed out at an indicated 270 kph on the A3 here in Germany between Wurzburg and Frankfurt (slight downhill). GPS gave me a reading of 261 kph, which comes out to 162 mph.

EDIT: Just wanted to clarify that the GPS is a stand-alone unit, and not the "in-dash" GPS, which--to my knowledge--doesn't provide this information.

MysticBlue · 09-25-2012, 03:35 AM

Why is this misinformation repeated over and over?

The electronic limiter is not 155. It's 161.
Not a big deal, but it just irritates me because I've seen it over and over for the past 4 years.
Everyone, say it with me.....One Sixty One.
I know it's true. It's been discussed. It's been written about in car magazines. It's in most test drive article statistics. Oh, and Sapper, above, just did it. I've confirmed it myself (before mods) with two different GPS units. Still accelerating, gently, up to and briefly 162, then gently it backed off and said 161, then 160, then 161, then 162, back to 161, etc. I spent probably 30 seconds there while it oscillated between 162 and 160, all the while the pedal was pressed to the floor. I've done this a couple different times. Speedo was reading somewhere just above 170.

persian54 · 09-25-2012, 03:46 AM

Quote:

Originally Posted by MysticBlue

Why is this misinformation repeated over and over?

The electronic limiter is not 155. It's 161.
Not a big deal, but it just irritates me because I've seen it over and over for the past 4 years.

Because all other BMWs (to my knowledge) and german cars are at 155, or so says the manual (it's late, so sorry if my memory is off)

That's why people say 155

In my dream, I hit speedo speed of 186. I was dreaming for I would never drive that fast on public road, even if there was no one around.

Mike Benvo · 09-25-2012, 08:37 AM

Quote:

Originally Posted by MysticBlue

Why is this misinformation repeated over and over?

The electronic limiter is not 155. It's 161.
Not a big deal, but it just irritates me because I've seen it over and over for the past 4 years.
Everyone, say it with me.....One Sixty One.
I know it's true. It's been discussed. It's been written about in car magazines. It's in most test drive article statistics. Oh, and Sapper, above, just did it. I've confirmed it myself (before mods) with two different GPS units. Still accelerating, gently, up to and briefly 162, then gently it backed off and said 161, then 160, then 161, then 162, back to 161, etc. I spent probably 30 seconds there while it oscillated between 162 and 160, all the while the pedal was pressed to the floor. I've done this a couple different times. Speedo was reading somewhere just above 170.

Speed limit pulled straight from the hex code in the DME and applying the proper offset/correction factor is set to 252kmh which is about 156.6mph. Not saying that what you observed didn't happen.

JuRuKi · 09-25-2012, 10:52 AM

how safe does it feel at those speeds? anything over 120mph is scary for me

mdosu · 09-25-2012, 11:06 AM

legally? 65 mph, of course. lol.

I've probably hit 100 mph without noticing it once, the speed is really deceptive in this car, going 60 mph and 100 mph feels the same.

I have zero incentive to drive fast in VA. Mandatory jail time for going over 100 mph here, talk about an easy way to fuck up your life.

Detroit M3 · 09-25-2012, 11:30 AM

Quote:

Originally Posted by mdosu

legally? 65 mph, of course. lol.

I've probably hit 100 mph without noticing it once, the speed is really deceptive in this car, going 60 mph and 100 mph feels the same.

+1

Detroit M3 · 09-25-2012, 11:32 AM

Quote:

Originally Posted by MysticBlue

Why is this misinformation repeated over and over?

The electronic limiter is not 155. It's 161.
Not a big deal, but it just irritates me because I've seen it over and over for the past 4 years.
Everyone, say it with me.....One Sixty One.
I know it's true. It's been discussed. It's been written about in car magazines. It's in most test drive article statistics. Oh, and Sapper, above, just did it. I've confirmed it myself (before mods) with two different GPS units. Still accelerating, gently, up to and briefly 162, then gently it backed off and said 161, then 160, then 161, then 162, back to 161, etc. I spent probably 30 seconds there while it oscillated between 162 and 160, all the while the pedal was pressed to the floor. I've done this a couple different times. Speedo was reading somewhere just above 170.

The factory says 155. To bad i was tuned so shortly after I got my car that I never ran into the limiter.

Detroit M3 · 09-25-2012, 11:33 AM

Quote:

Originally Posted by JuRuKi

how safe does it feel at those speeds? anything over 120mph is scary for me

180 was a little scary...

808@702 · 09-25-2012, 11:58 AM

152 mph North of Vegas. I was by myself and paying attention so no pics.
This is like making a hole in one with no witnesses.

808@702 · 09-25-2012, 12:02 PM

Quote:

Originally Posted by HotIce

That M3 went to 80 in no time...oh my..

Zero to 100 in 4 seconds!

Sam@ModeCarbon · 09-25-2012, 12:36 PM

173mph in my e90.. PLANTED. Coils make the biggest difference.

Open track event Meadowlands in NJ

09-24-2012, 09:52 PM	#24
1MOREMOD Major General Drives: at a moderate pace Join Date: Mar 2009 Location: garage Posts: 6,634 iTrader: (3)	most ive seen is 139.4 gps verfied on front straight of pacific raceways. __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings & bearings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster knob\|Euro header\|Eisenmann sport\|K&N c.a.i.\|Epic race tune\|Rouge race pulleys\|Seibon CF hood\|CSL bumper\|CSL brakes\|RS19s\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|Apex studs\|

09-24-2012, 10:02 PM	#25
e92doc Hospital Slave Drives: 2012 MW M3 Coupe Join Date: Apr 2008 Location: Syracuse, NY Posts: 141 iTrader: (0) Garage List 2011 335xi Coupe [0.00]	138ish at Wakins Glen yesterday on the straight after the esses before the bus stop - 3 times __________________ 2012 M3 Coupe Mineral White, DCT, Premium Package, Competition Package, Sat, Heated Seats, OEM Carbon Fiber Splitters, OEM Carbon Fiber Spoiler, iND reflectors, OEM GTS Black 359 Competition wheels

09-24-2012, 10:56 PM	#30
Mike Benvo BimmerPost Supporting Vendor Drives: BPMSport M3 / 7 Series Join Date: Apr 2008 Location: SoCal Posts: 3,360 iTrader: (6)	I've hit close to 187 in my car via gps, but this is the fastest I have a picture of (taken by my passenger of course): This was probably around 170mph given how inaccurate the speedo is on top. Attached Images __________________ -----\| Like us on Facebook \| Instagram \|\| Tuning Information \| Remote Coding \|----- ----Visit us at www.BPMSport.com - Emotion. Driven. \| Toll Free: (888) 557-5133----

09-24-2012, 11:51 PM	#31
///M Rakete Rocket Scientist Drives: BMW 2010 M3 Coupe Join Date: Aug 2009 Location: California Posts: 833 iTrader: (0)	272 KPH or 170 MPH speedometer indicated in a Sixt rental M3 on the A1 by the 'Ring. Car was riding up against the limiter which felt weird going downhill. Probably a real 155 MPH as I doubt the limiter had been removed. __________________ 2010 BMW M3 Coupe M-DCT w/Tech-EDC, BMW M Performance Exhaust, BPM Stage I Tune / Euro MDM, Space Gray / Fox Red Extended, and a Trunk Monkey known as "Der Stig", plus the daily driver... 2011 BMW 135i M Sport DCT, w/BMW Performance Power Kit, Exhaust, and Brake Rotors, Space Gray / Coral Red, known as "Stiggie" with an outlaw F20 "M135i" badge.

09-24-2012, 11:57 PM	#33
Sapper_M3 Private Drives: 2012 E92 M3, ZCP Join Date: Sep 2012 Location: Missouri Posts: 74 iTrader: (0)	Just yesterday, I maxed out at an indicated 270 kph on the A3 here in Germany between Wurzburg and Frankfurt (slight downhill). GPS gave me a reading of 261 kph, which comes out to 162 mph. EDIT: Just wanted to clarify that the GPS is a stand-alone unit, and not the "in-dash" GPS, which--to my knowledge--doesn't provide this information. Last edited by Sapper_M3; 09-25-2012 at 04:05 AM.

09-25-2012, 03:35 AM	#34
MysticBlue Major Drives: '09 M3 DCT Coupe Join Date: Apr 2008 Location: Eastern Oregon... They call 'em rigs here Posts: 1,045 iTrader: (0)	Why is this misinformation repeated over and over? The electronic limiter is not 155. It's 161. Not a big deal, but it just irritates me because I've seen it over and over for the past 4 years. Everyone, say it with me.....One Sixty One. I know it's true. It's been discussed. It's been written about in car magazines. It's in most test drive article statistics. Oh, and Sapper, above, just did it. I've confirmed it myself (before mods) with two different GPS units. Still accelerating, gently, up to and briefly 162, then gently it backed off and said 161, then 160, then 161, then 162, back to 161, etc. I spent probably 30 seconds there while it oscillated between 162 and 160, all the while the pedal was pressed to the floor. I've done this a couple different times. Speedo was reading somewhere just above 170. __________________ Active Autowerke filter, Dinan underdrive pulley, Dinan full exhaust and software, Dinan springs, Dinan Brakes, Dinan/HRE wheels, 275/30-19 w/10mm spacer, 295/30-19 w/3mm spacer, painted front reflectors, 30% tint, Escort 8500i & Lidar Jammer, AngeliBright halos, Euro rear foglights, 3M ClearBra.

09-25-2012, 10:52 AM	#37
JuRuKi Private Drives: E90 M3 Join Date: Sep 2012 Location: SoCaL Posts: 98 iTrader: (1)	how safe does it feel at those speeds? anything over 120mph is scary for me

09-25-2012, 11:06 AM	#38
mdosu p...p...p...p...pkilla!!! Drives: 2008.99989 SSII E90 M3 "Civic" Join Date: Oct 2009 Location: Northern Virginia Posts: 6,241 iTrader: (4)	legally? 65 mph, of course. lol. I've probably hit 100 mph without noticing it once, the speed is really deceptive in this car, going 60 mph and 100 mph feels the same. I have zero incentive to drive fast in VA. Mandatory jail time for going over 100 mph here, talk about an easy way to fuck up your life. __________________ Yes, that's a xmas tree in my trunk

09-25-2012, 11:58 AM	#42
808@702 7th BMW, 500th Surfboard Drives: My girlfriends crazy! Join Date: Sep 2009 Location: Las Vegas, Nv. and Honolulu, Hi. Posts: 718 iTrader: (0)	152 mph North of Vegas. I was by myself and paying attention so no pics. This is like making a hole in one with no witnesses.

09-25-2012, 12:36 PM	#44
Sam@ModeCarbon BimmerPost Supporting Vendor Drives: ESS RAV4 Join Date: Nov 2010 Location: Miami l NYC Posts: 1,520 iTrader: (0)	173mph in my e90.. PLANTED. Coils make the biggest difference. Open track event Meadowlands in NJ __________________ Web: modecarbon.com l Email: sam@modecarbon.com l Facebook Last edited by Sam@ModeCarbon; 09-25-2012 at 02:24 PM.

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