Actual top speed of M Coupe/Roadster

dekaliber · 04-23-2010, 08:02 AM

Couldn't find this with a search...

Just out of curiosity, has anyone ever taken the limiter off their M Coupe/Roadster? What's the actual top speed? If the 3.0si is capable of running at 155 mph, what's the M?

epbrown · 04-23-2010, 08:28 AM

Best guess is that with stock gearing and its drag coefficient, the Z4M can hit low 170s.

ryanchua · 04-23-2010, 10:03 AM

There is a 300km/hr M driver module. Though actual GPS speed is not confirmed.

I would suspect it would max out around 280-290km gps.. that's just an estimation.

mousitch · 04-23-2010, 10:42 AM

Had 155 mph on the speedo last weekend. So actual was prob like 145 mph. I have my limiter turned off and had a lot of RPM's left. Cant tell you the exact RPM in 6th as my hands were full

It had more speed left in it but wasnt gonna push it.

Hawkeye · 04-23-2010, 11:02 AM

You have a nice radar detector... get us an answer!!!!

mousitch · 04-23-2010, 11:04 AM

It's not the cops I'm scared of. Could you imagine striking a deer at that speed. Oooo. Not good. Yes I love the 9500, how's your V1 working out?

Serious · 04-23-2010, 11:09 AM

mid 170's. I had a gearing checked 167mph out of my e46 m3 last year in 5th gear.

psygnosis · 04-23-2010, 11:26 AM

Fire up Forza 3 and find out

G80indy · 04-23-2010, 12:55 PM

Quote:

Originally Posted by mousitch

....but wasnt gonna push it.

hahahaha

going 155 isn't?

Z3Z4MC · 04-23-2010, 01:04 PM

I remember reading somewhere that a guy in Germany tested at 168MPH on the Autobahn.

mousitch · 04-23-2010, 01:09 PM

Quote:

Originally Posted by 330indy

hahahaha

going 155 isn't?

It got there so fast that I did'nt really know I was pushing it

G80indy · 04-23-2010, 01:32 PM

looks like you have a little one there....

be careful

pbdm4k · 04-27-2010, 12:48 PM

I've hit 250km/h before.

Don't think I'll ever contest the speed limits of this car again anytime soon, but it's bloody hell ass stable at that speed.

Things really start to zip past you at that speed.

Hawkeye · 04-27-2010, 02:07 PM

Quote:

Originally Posted by mousitch

It's not the cops I'm scared of. Could you imagine striking a deer at that speed. Oooo. Not good. Yes I love the 9500, how's your V1 working out?

V1 is kind of annoying while driving through town.. even on the intelligent mode, but it has saved me a few times on the highway already. I find myself speeding a lot more since I got it... not anything close to 155 though! Haha.

wildag · 04-27-2010, 02:38 PM

jebus... 170 is uhhhhh... fast.

Matty C · 04-29-2010, 07:15 AM

With Hamann tune and limiter removed I've had a GPS Speed of 283 KHP which translates to 176 MPH.

epbrown · 04-29-2010, 06:58 PM

Quote:

Originally Posted by wildag

jebus... 170 is uhhhhh... fast.

Yeah, 150mph is about my limit, and I've done that maybe 4 times in my 50 years on the planet. At that speed, you're approaching the limits of what you can do when variables present themselves, even on an straight, empty road. I hit an opposum in KY once when I was a kid, doing about 120 in my brand new Honda Prelude, and it was quite sobering how quickly it was over. By the time it registered that something was in the road, I was a half mile past impact.

Thisisdudewhoru · 04-29-2010, 08:38 PM

Gear wise, the manual says in 6th gear it's good for 24.3mph per 1000rpms so multiply 24.3x8 and you have your topspeed if there were no drag, had enough power and you had the balls to do it.

dekaliber · 04-29-2010, 09:48 PM

Quote:

Originally Posted by Thisisdudewhoru

Gear wise, the manual says in 6th gear it's good for 24.3mph per 1000rpms so multiply 24.3x8 and you have your topspeed if there were no drag, had enough power and you had the balls to do it.

Theoretical top speed in 6th gear @ 8000 RPM with no drag would be 201.35 based on this calculator: http://www.kabamus.com/garage/gears.html

Was just curious how a drag coefficient of 0.35 factors into the equation, but 170s sounds right...

psygnosis · 04-29-2010, 10:12 PM

So I tested this out in Forza 3 on the Xbox. Highest speed I could get on a stock setup with the M Coupe was 173mph in 5th, this wasn't quite at redline and I couldn't get anything more from 6th gear, edit: Taking into account the ~3% speedo error, an actual car probably would have shown about 178mph. With level 1 intake and exhaust with maximum weight reduction I got to about 180.

G80indy · 04-29-2010, 10:26 PM

seems like the technical accuracy of the game makes it

sirmalloc · 04-30-2010, 12:44 AM

Quote:

Originally Posted by mousitch

Could you imagine striking a deer at that speed. Oooo. Not good.

I don't have to imagine, I remember coming across a slightly graphic set of photos on Flickr of someone that did exactly that.

04-23-2010, 08:02 AM	#1
dekaliber Major 86 Rep 1,143 Posts Drives: '07 Z4MC, '11 JCW, '18 Z06 Join Date: Mar 2008 Location: Los Angeles iTrader: (1)	Actual top speed of M Coupe/Roadster Couldn't find this with a search... Just out of curiosity, has anyone ever taken the limiter off their M Coupe/Roadster? What's the actual top speed? If the 3.0si is capable of running at 155 mph, what's the M?
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04-23-2010, 08:28 AM	#2
epbrown Colonel 69 Rep 2,128 Posts Drives: BMW M Coupe, Porsche Boxster S Join Date: May 2007 Location: Chicago, IL iTrader: (0)	Best guess is that with stock gearing and its drag coefficient, the Z4M can hit low 170s.
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04-23-2010, 10:03 AM	#3
ryanchua Z4MC Sapphire Black 50 Rep 177 Posts Drives: 570-4SL Join Date: Feb 2008 Location: Singapore iTrader: (2)	There is a 300km/hr M driver module. Though actual GPS speed is not confirmed. I would suspect it would max out around 280-290km gps.. that's just an estimation. __________________ Sorely missed: Zeta le Z4M Coupe (2008-2012) BMW.SG - Singapore's Ultimate BMW Enthusiast Community
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04-23-2010, 10:42 AM	#4
mousitch Dark Sider 151 Rep 1,781 Posts Drives: 2008 Space Gray Z4MC Join Date: Jan 2010 Location: Missouri iTrader: (11) Garage List 2008 Z4M Coupe [7.50]	Had 155 mph on the speedo last weekend. So actual was prob like 145 mph. I have my limiter turned off and had a lot of RPM's left. Cant tell you the exact RPM in 6th as my hands were full It had more speed left in it but wasnt gonna push it. __________________ [URL=http://imageshack.us/photo/my-images/153/071jt.jpg/] 2008 Space Grey M Coupe-Euro headers-RPI Scoop-Gruppe M CAI-Eisenmann Race Cans-RE X-pipe-ECU Remap with O2 and EGT delete-H&R Sport springs-Zeck CDV delete-Stock Gloss black powder coated wheels-LED Tekarbon Angel Eyes Project-Michelin Super Sports-Hardwired Uniden R7-H&R front and rear spacers-Alarm module added-stereo amp recoded to vert spec settings
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04-23-2010, 11:02 AM	#5
Hawkeye Brigadier General 2071 Rep 4,365 Posts Drives: '07 Z4 Coupe, '21 X3, '16 GMC Join Date: Aug 2007 Location: Iowa iTrader: (0) Garage List 2016 GMC Sierra SLT [10.00] 2008 Yamaha R6 [9.00]	You have a nice radar detector... get us an answer!!!! __________________ 2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP 2016 GMC Sierra SLT Z71 Premium Plus 4x4 2017 Harley StreetGlide • Denim Black • V&H Tune 2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
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04-23-2010, 11:04 AM	#6
mousitch Dark Sider 151 Rep 1,781 Posts Drives: 2008 Space Gray Z4MC Join Date: Jan 2010 Location: Missouri iTrader: (11) Garage List 2008 Z4M Coupe [7.50]	It's not the cops I'm scared of. Could you imagine striking a deer at that speed. Oooo. Not good. Yes I love the 9500, how's your V1 working out? __________________ [URL=http://imageshack.us/photo/my-images/153/071jt.jpg/] 2008 Space Grey M Coupe-Euro headers-RPI Scoop-Gruppe M CAI-Eisenmann Race Cans-RE X-pipe-ECU Remap with O2 and EGT delete-H&R Sport springs-Zeck CDV delete-Stock Gloss black powder coated wheels-LED Tekarbon Angel Eyes Project-Michelin Super Sports-Hardwired Uniden R7-H&R front and rear spacers-Alarm module added-stereo amp recoded to vert spec settings
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04-23-2010, 11:09 AM	#7
Serious 1M advocate 216 Rep 878 Posts Drives: 2018 S4. 2011 M3. 2012 S1000RR Join Date: Mar 2008 Location: Seattle iTrader: (0)	mid 170's. I had a gearing checked 167mph out of my e46 m3 last year in 5th gear. __________________ 2012 BMW S1000RR 2011 BMW M3
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04-23-2010, 11:26 AM	#8
psygnosis Major 25 Rep 1,034 Posts Drives: '04 Z4 3.0i Sport Join Date: Nov 2008 Location: WA iTrader: (0)	Fire up Forza 3 and find out __________________ Straightaways are for fast cars, Corners are for fast drivers.
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04-23-2010, 01:04 PM	#10
Z3Z4MC Private 1 Rep 80 Posts Drives: Z4MC Join Date: Jul 2009 Location: usa iTrader: (0)	I remember reading somewhere that a guy in Germany tested at 168MPH on the Autobahn. __________________
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04-23-2010, 01:32 PM	#12
G80indy Save the Manuals 1981 Rep 3,103 Posts Drives: Z3, E46, G80 Join Date: May 2005 Location: Indy iTrader: (0)	looks like you have a little one there.... be careful __________________ 2023 G80 6MT, CCBs 2002 330i Dinan, 5MT 2000 Z3 Conforti, 5MT
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04-27-2010, 12:48 PM	#13
pbdm4k Lieutenant Colonel 81 Rep 1,689 Posts Drives: 2010 335d Join Date: May 2007 Location: North of the Border iTrader: (3)	I've hit 250km/h before. Don't think I'll ever contest the speed limits of this car again anytime soon, but it's bloody hell ass stable at that speed. Things really start to zip past you at that speed. __________________ 2010 BMW 335d "Ha! She wants the D." 2006 VW Jetta 2.5 Once upon a time... '03 VW GTI, '99 Audi A4 1.8TQ, '00 VW Jetta 1.85T, '09 BMW 335i xDrive, '04 BMW Z4 3.0i, '01 Audi TT 1.8T, '04 Volvo S80 2.5T
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04-27-2010, 02:38 PM	#15
wildag ///M'n it Up 19 Rep 344 Posts Drives: '06 ///M Roadster Join Date: Aug 2009 Location: Reston, VA iTrader: (0)	jebus... 170 is uhhhhh... fast.
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04-29-2010, 07:15 AM	#16
Matty C First Lieutenant 23 Rep 324 Posts Drives: 2007 Z4 M Roadster, 2006 M3 Join Date: May 2009 Location: Bodensee iTrader: (0)	With Hamann tune and limiter removed I've had a GPS Speed of 283 KHP which translates to 176 MPH. __________________ 2007 Black Sapphire Z4 //M Roadster, Hamann Front End, Hamann Rear Diffuser, Hamann 19 Inch Anniversary Wheels, Eisenmann Race Exhaust, Group M Intake, RPI Ram Air, CDV Delete 2006 E46 M3, 2004 Jeep Rubicon, 93 Golf VR6
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04-29-2010, 08:38 PM	#18
Thisisdudewhoru Captain 84 Rep 697 Posts Drives: 16 BSM 340i Join Date: Mar 2010 Location: 423 iTrader: (1)	Gear wise, the manual says in 6th gear it's good for 24.3mph per 1000rpms so multiply 24.3x8 and you have your topspeed if there were no drag, had enough power and you had the balls to do it. __________________ '16 BSM 340i M Sport + Track Pack.:.M Perf Exhaust.:.Polished BBS RS-GT.:.JB4.:.BMS Intake.:.H&R Sport.:.
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04-29-2010, 10:12 PM	#20
psygnosis Major 25 Rep 1,034 Posts Drives: '04 Z4 3.0i Sport Join Date: Nov 2008 Location: WA iTrader: (0)	So I tested this out in Forza 3 on the Xbox. Highest speed I could get on a stock setup with the M Coupe was 173mph in 5th, this wasn't quite at redline and I couldn't get anything more from 6th gear, edit: Taking into account the ~3% speedo error, an actual car probably would have shown about 178mph. With level 1 intake and exhaust with maximum weight reduction I got to about 180. __________________ Straightaways are for fast cars, Corners are for fast drivers. Last edited by psygnosis; 04-29-2010 at 10:28 PM..
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04-29-2010, 10:26 PM	#21
G80indy Save the Manuals 1981 Rep 3,103 Posts Drives: Z3, E46, G80 Join Date: May 2005 Location: Indy iTrader: (0)	seems like the technical accuracy of the game makes it __________________ 2023 G80 6MT, CCBs 2002 330i Dinan, 5MT 2000 Z3 Conforti, 5MT
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