E92 M3's top speed?

KazukiM3 · 12-18-2007, 06:21 PM

hello

i have a question for everyone

i know that e92 m3's top speed up to 155 mph with electronic limited

E92 M3 WITHOUTs electronic limited, what it will be top speed? more than 200 mph?

Epacy · 12-18-2007, 06:23 PM

Quote:

Originally Posted by KazukiM3

hello

i have a question for everyone

i know that e92 m3's top speed up to 155 mph with electronic limited

E92 M3 WITHOUTs electronic limited, what it will be top speed? more than 200 mph?

CSL-Fanatik · 12-18-2007, 06:41 PM

Quote:

Originally Posted by KazukiM3

hello

i have a question for everyone

i know that e92 m3's top speed up to 155 mph with electronic limited

E92 M3 WITHOUTs electronic limited, what it will be top speed? more than 200 mph?

Between 185 and 190 mph. The gearing does not allow for 200 mph..

Best regards,

CSL

swamp2 · 12-18-2007, 06:44 PM

Quote:

Originally Posted by Epacy

I am not aware of any posts that have reported actual top speeds.

My guess and simulation results with CarTest indicate top speed will be just a bit over 180 mph and if the M-DCT cars is geared just right it could be a few mph faster than the 6MT.

swamp2 · 12-18-2007, 06:59 PM

Quote:

Originally Posted by CSL-Fanatik

Between 185 and 190 mph. The gearing does not allow for 200 mph..

Best regards,

CSL

Gear limited speed (either in vacuum or if it had 0 drag) is 204 mph using an ideal calculation for tire diameter. If you use the rule on the US Michelin web site the tire comes out slightly smaller and therefore you get a top speed of 195. The car will be drag limited not gear/redline limited.

Tire diameters are: std. calculation:
Without tolerances: [(265 x 0.4) x 2 + (18 x 2.54)] * pi = 2.10 m

Michelin website:
63,360 divided by revolutions pre mile = rolling circumference in inches:
For the 265/40ZR18 PS2 Michelin states 790 revs per mile so 63,360 / 790 = 80.202 inches = 2.037 m.

Keep in mind that simply a new tire vs. well worn tire would make more of a difference than these variations as well!

swamp2 · 12-18-2007, 07:00 PM

Quote:

Originally Posted by CSL-Fanatik

Between 185 and 190 mph.

Are you sure?

///MArdor · 12-18-2007, 07:10 PM

Quote:

Originally Posted by KazukiM3

hello

i have a question for everyone

i know that e92 m3's top speed up to 155 mph with electronic limited

E92 M3 WITHOUTs electronic limited, what it will be top speed? more than 200 mph?

155mph to slow for you?

GregW / Oregon · 12-18-2007, 07:50 PM

Quote:

Originally Posted by swamp2

I am not aware of any posts that have reported actual top speeds.

My guess and simulation results with CarTest indicate top speed will be just a bit over 180 mph and if the M-DCT cars is geared just right it could be a few mph faster than the 6MT.

That sounds about right. The E46 was just around 170.

KazukiM3 · 12-18-2007, 11:52 PM

Quote:

Originally Posted by swamp2

Are you sure?

im not sure about that
i can feel e92 m3 can go up close to 200 mph
if e92 m3 has V10, then it would be going more than 200 mph

KazukiM3 · 12-18-2007, 11:52 PM

Quote:

Originally Posted by GregW / Oregon

That sounds about right. The E46 was just around 170.

e46 can be more than 180mph with csl

KazukiM3 · 12-18-2007, 11:54 PM

Quote:

Originally Posted by ///MArdor

155mph to slow for you?

i already drove at 154 mph with bmw 525i 03'

southlight · 12-19-2007, 04:12 AM

Quote:

Originally Posted by swamp2

Gear limited speed (either in vacuum or if it had 0 drag) is 204 mph using an ideal calculation for tire diameter. If you use the rule on the US Michelin web site the tire comes out slightly smaller and therefore you get a top speed of 195. The car will be drag limited not gear/redline limited.

Tire diameters are: std. calculation:
Without tolerances: [(265 x 0.4) x 2 + (18 x 2.54)] * pi = 2.10 m

Michelin website:
63,360 divided by revolutions pre mile = rolling circumference in inches:
For the 265/40ZR18 PS2 Michelin states 790 revs per mile so 63,360 / 790 = 80.202 inches = 2.037 m.

Keep in mind that simply a new tire vs. well worn tire would make more of a difference than these variations as well!

That's it: For the 18" wheels the average circumference is 2.02m, that makes a gear limited top speed of 188.6 mph (19": 187,7, 2.01m circumference).

Best regards, south

footie · 12-19-2007, 04:31 AM

As I has said already else where on other threads, that when the M-DCT box arrivals with it's 7 gears the M3's topspeed WILL increase and the gearing will NOT be set up so that it's 7th and the manual's 6th will be the same.

The circumference as South states will actually be small due to the weight of the car compressing the bottom of the tyre slightly and so reducing the actual speed.

MrHarris · 12-19-2007, 04:36 AM

the e46 m3 was 175, i've tested this for like 4 miles straight before going with an m6.

Champagne · 12-19-2007, 04:50 AM

I don't mind it being limited to 250 km/h... Where am I going to even reach those speeds? Where do you exceed? Highway? Looong track?

GregW / Oregon · 12-19-2007, 08:20 AM

Quote:

Originally Posted by MrHarris

the e46 m3 was 175, i've tested this for like 4 miles straight before going with an m6.

Was this with GPS speed measuring? German speedometers ar notoriously optimistic.

GregW / Oregon · 12-19-2007, 08:24 AM

Quote:

Originally Posted by KazukiM3

e46 can be more than 180mph with csl.

Sure, it has up to 360 hp.

footie · 12-19-2007, 09:55 AM

Quote:

Originally Posted by GregW / Oregon

Sure, it has up to 360 hp.

I have known V8 S4s and Mk1 RS4s which have been reaching speeds in excess of 170~175mph so I wouldn't doubt that the CSL could reach over 180mph, the same goes for the new M3 but there is a big difference between achieving 180mph and over 200mph.

13eastie · 12-19-2007, 10:16 AM

Quote:

Originally Posted by footie

As I has said already else where on other threads, that when the M-DCT box arrivals with it's 7 gears the M3's topspeed WILL increase and the gearing will NOT be set up so that it's 7th and the manual's 6th will be the same.

If the top speed is drag/power dependent, you will most likely need a lower ratio for the DCT to be faster.

GregW / Oregon · 12-19-2007, 10:23 AM

Quote:

Originally Posted by 13eastie

If the top speed is drag/power dependent, you will most likely need a lower ratio for the DCT to be faster.

I believe top speed in the E46 M3 is achieved in 5th. A closer ratio 7-speed would give you the option of 5th or 6th.

AndrewAZ · 12-19-2007, 10:26 AM

An E46 M3 without a limiter on it would struggle to do more than 170mph +- 4 mph. Back in the day mine would hit an indicated 165 and stop but BMW's have speed errors of up to 10% in the speedometer. (I have a letter for BMW NA about this). So if you state going 170mph you could only really be doing 153 MPH which is feasible.

CSL-Fanatik · 12-19-2007, 10:29 AM

Here are the M3 gear Ratios

Final Drive 3.64:1

1st Gear Ratio 4.23:1
2nd Gear Ratio 2.53:1
3rd Gear Ratio 1.67:1
4th Gear Ratio 1.23:1
5th Gear Ratio 1.00:1
6th Gear Ratio 0.83:1

red line is 8,400 rpm as you guys know.

Best regards,

CSL

12-18-2007, 06:21 PM	#1
KazukiM3 For the love of ///M3 4 Rep 16 Posts Drives: just borrowed car Join Date: Nov 2007 Location: Orange, CA iTrader: (0)	E92 M3's top speed? hello i have a question for everyone i know that e92 m3's top speed up to 155 mph with electronic limited E92 M3 WITHOUTs electronic limited, what it will be top speed? more than 200 mph?
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12-19-2007, 04:31 AM	#13
footie Major General 1153 Rep 8,027 Posts Drives: i5M60 Join Date: Oct 2007 Location: No where fast iTrader: (0) Garage List 2024 BMW i5M60 [0.00] 2022 BMW i4M50 [0.00] 2020 BMW M5 Competi ... [0.00] 2008 E92 M3 [0.00]	As I has said already else where on other threads, that when the M-DCT box arrivals with it's 7 gears the M3's topspeed WILL increase and the gearing will NOT be set up so that it's 7th and the manual's 6th will be the same. The circumference as South states will actually be small due to the weight of the car compressing the bottom of the tyre slightly and so reducing the actual speed.
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12-19-2007, 04:36 AM	#14
MrHarris yodog 197 Rep 5,025 Posts Drives: '86 Corolla Join Date: Jun 2007 Location: Diamond Bar, Ca iTrader: (5) Garage List 2009 BMW [10.00]	the e46 m3 was 175, i've tested this for like 4 miles straight before going with an m6.
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12-19-2007, 04:50 AM	#15
Champagne Second Lieutenant 13 Rep 271 Posts Drives: E92 M3 Coupé Join Date: Nov 2007 Location: Sweden, Stockholm iTrader: (0)	I don't mind it being limited to 250 km/h... Where am I going to even reach those speeds? Where do you exceed? Highway? Looong track?
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12-19-2007, 10:26 AM	#21
AndrewAZ Major 137 Rep 1,243 Posts Drives: 335i Join Date: Jan 2007 Location: CA iTrader: (0)	An E46 M3 without a limiter on it would struggle to do more than 170mph +- 4 mph. Back in the day mine would hit an indicated 165 and stop but BMW's have speed errors of up to 10% in the speedometer. (I have a letter for BMW NA about this). So if you state going 170mph you could only really be doing 153 MPH which is feasible.
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12-19-2007, 10:29 AM	#22
CSL-Fanatik First Lieutenant 91 Rep 388 Posts Drives: e46 M3, e46 M3 CSL Join Date: May 2006 Location: Boulder, CO / Frankfurt, GER iTrader: (0) Garage List 2008 BMW M3 [0.00] 2004 BMW M3 [0.00]	Here are the M3 gear Ratios Final Drive 3.64:1 1st Gear Ratio 4.23:1 2nd Gear Ratio 2.53:1 3rd Gear Ratio 1.67:1 4th Gear Ratio 1.23:1 5th Gear Ratio 1.00:1 6th Gear Ratio 0.83:1 red line is 8,400 rpm as you guys know. Best regards, CSL
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