5Series.net - Forums

5Series.net - Forums (https://5series.net/forums/)
-   6 Series Discussion (https://5series.net/forums/6-series-discussion-27/)
-   -   Natural top speed? (https://5series.net/forums/6-series-discussion-27/natural-top-speed-69946/)

mb43 01-30-2009 12:28 PM
Does anyone know what the top speed of the 650 and 645 coupe and convertible would be if there was no limiter?

Krozi 01-30-2009 01:04 PM
Originally Posted by mb43' post='781375' date='Jan 30 2009, 04:28 PM
Does anyone know what the top speed of the 650 and 645 coupe and convertible would be if there was no limiter?
I think top speed for 545i is 290km/h. Not sure about 645 but probably the same.

schulrog 01-30-2009 01:44 PM
i've had my 645 vert up to 145mph but hit traffic. fealt like there was still plenty of room to accelerate though

tbal 01-30-2009 02:14 PM
shouldnt be going that fast to begin with, and not in a vert! :P

schulrog 01-30-2009 02:24 PM
:D that's cause i'm a crazy german lol

tbal 01-31-2009 01:27 AM
Krazy Germans! :P

Krozi 01-31-2009 03:47 AM
Originally Posted by tbal' post='781706' date='Jan 31 2009, 05:27 AM
Krazy Germans! :P
I too am a German

Krozi the Krazy German :P

jostan 02-02-2009 04:07 PM
Originally Posted by schulrog' post='781420' date='Jan 30 2009, 05:44 PM
i've had my 645 vert up to 145mph but hit traffic. fealt like there was still plenty of room to accelerate though
crazy...Top down or up??

schulrog 02-02-2009 04:29 PM
I've done both:P

6er 02-03-2009 02:13 PM
Hamann do Delimiting for 630/645/650

The outcome of the reprograming

630 = 263 km/h (163.43mph)
645 = 280 km/h (173.99mph)
650 = 270 km/h (167.78mph)

jostan 02-03-2009 03:48 PM
Originally Posted by 6er' post='784382' date='Feb 3 2009, 07:13 PM
Hamann do Delimiting for 630/645/650

The outcome of the reprograming

630 = 263 km/h (163.43mph)
645 = 280 km/h (173.99mph)
650 = 270 km/h (167.78mph)
Shouldn't the 650 be 280 and 645 270 km/h?

I thought the 650 has more HP? That would be crazy hitting 280kmh ...might have to chip tune soon.

6er 02-04-2009 12:25 AM
Originally Posted by jostan' post='784446' date='Feb 3 2009, 07:48 PM
Shouldn't the 650 be 280 and 645 270 km/h?

I thought the 650 has more HP? That would be crazy hitting 280kmh ...might have to chip tune soon.

My post is correct :)

schulrog 02-04-2009 12:46 AM
HA suckers... bring on the 650!! :P lol

jostan 02-04-2009 07:34 AM
That is weird...how does the exact same car but with more hp have a lower top speed? Doesn't add up.

6er 02-04-2009 09:42 AM
Only 34hp more, 20kg heavier... who knows

akrokh 03-20-2009 02:33 AM
Originally Posted by mb43' post='781375' date='Jan 30 2009, 11:28 PM
Does anyone know what the top speed of the 650 and 645 coupe and convertible would be if there was no limiter?
You should check gearbox and final drive ratios :)

sil645 03-26-2009 08:17 PM
160mph after a long day of work and a night of drinking... not a good idea!

Jagular 03-27-2009 12:43 PM
I hit 100 MPH when my wife speed limiter hit...

andy545 03-28-2009 12:09 PM
Originally Posted by jostan' post='784909 (Post 821934)
You should check gearbox and final drive ratios :)
Our cars have a DME (engine management) but also a transmission ecu. When the speed limit is removed in the DME the restricting factor is at the ecu governing transmission gear revolutions. It seems the 650 is more restricted in this manner.

Also the 5er has a higher top speed than the 6er when the DME speed limiter is lifted (delta is about 7km/h)

I've discovered that my 545i will not go beyond 172miles/h (true speed - not indicated) in 6th (5200rpm) unless I manipulate the transmission ecu. Is it doable ? - yes, but quite difficult (not a simple ecu flash upgrade).

:thumbsup:


All times are GMT -8. The time now is 06:00 AM.


© 2024 MH Sub I, LLC dba Internet Brands