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BMW 5-Series (G30) Forum 2017+ BMW 5 Series (G30) General Discussions First Video of a 2018 BMW M550ix in the 1/4 - 12.3@115 MPH

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      07-17-2017, 03:30 PM   #23
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Quote:
Originally Posted by Sheharyar_rr View Post
F10 m5 did 11.9 @ 120, which makes it 0.4 quicker than m550 having 100 more bhp. I don?t get what?s so unbelievable about your car being 0.4 and 7mph slower while having 100 bhp less and less weight. My own tuned 335i did 12.67 @ 111. I?ve driven the G30 which definitely felt quicker. Plus it?s the first time 1/4 mile has been done, I?m sure over time, with better conditions we?ll get better times.
And here is the person who will test my tuning theories - right Sheharyar lol?
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      07-17-2017, 03:33 PM   #24
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Cutting a 1.8 60' is pretty sweet.
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      07-17-2017, 03:35 PM   #25
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Quote:
Originally Posted by CntryClub007 View Post
Cutting a 1.8 60' is pretty sweet.
Thanks - It left well and the load up on the back wheels made people take notice. I cut a real light because I was racing a Caddy lol.

That said - lowering my tire pressure and less fuel and I hazard a guess I could get into the 1.7's and pop off a 12.0.
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      07-17-2017, 03:51 PM   #26
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Quote:
Originally Posted by BwoodBMW View Post
1/2 second in a much bigger/heavier/more luxurious car running bone stock is pretty impressive.
Exactly!
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      07-17-2017, 04:09 PM   #27
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Is your car broken in - how many miles does it have? I would wager that the transmission isn't broken in yet and the car will run a faster time when it is.
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      07-17-2017, 04:11 PM   #28
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I would think that the m550 would beat the S6 given that the S6 has 6 less horsepower, weighs 70 lbs more, and Audi rates its 0-60 as 4.4 to the 5's 3.9. Maybe Audi just severely underrates their power/acceleration figures? This would seem like a clear win for the m550 but it isnt
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      07-17-2017, 04:17 PM   #29
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Quote:
Originally Posted by vtknight View Post
First - you cannot even see the time - but I checked fastestlaps and they do run 12.1 at 115 MPH.

Now if you have experience racing - you would know that MPH is the cars potential. Exactly what I ran with the M550ix. And a 12.3. The S6 IS the competitor to the M550ix. This isn't the new M5. My car was driven with a .025 reaction time in auto using launch control. So there isn't much technically remaining - besides the fact the DA was high because it was super hot and humid, I had 3/4 tank of fuel and 42 psi in my tires.

Beyond that - you're right on the money.
EDIT: YOU can see the time in the video. You need a nice computer screen to see.

Thanks for the reply. I just know there is more potential somewhere, just on a better day. Lower temps, more miles on the engine, etc etc. I know my best run is 12.6 at 111 with my 335GT tuned. and it weighs 4000lbs, plus I'm 218. I have about 400 to the crank. So I'm sure the new 550 can hit 12 flat stock with better variables.
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      07-17-2017, 04:20 PM   #30
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Quote:
Originally Posted by Laserdude View Post
I would think that the m550 would beat the S6 given that the S6 has 6 less horsepower, weighs 70 lbs more, and Audi rates its 0-60 as 4.4 to the 5's 3.9. Maybe Audi just severely underrates their power/acceleration figures? This would seem like a clear win for the m550 but it isnt
Lol...a manufacturer lowering its numbers? You mean like Porsche - who says the Turbo S runs 3.2 0-60 when it's 2.5?

It's all math folks. Power, weight, drag and traction. Whatever the real numbers actually are. Can't fool physics im afraid.

And taking into account better DA, less fuel, and less tire psi - this car will run a 12.0. For a 4400 lb luxury car.

That is a C7 Corvette.

It's not a win though eh?
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      07-17-2017, 04:41 PM   #31
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Quote:
Originally Posted by Tengocity View Post
Certainly a quick car, but Is it all that impressive?

As a point of comparison I've done 12.8@108mph in a 335d remapped to 360bhp. I'd have thought this would have been quite a bit quicker than that.

Makes me feel less annoyed that they aren't going to sell them in the UK though.
The stock and heavier M550i is showing you it's much quicker than that tuned 335d......the trap speed tells us that this N63tu powered missile is going 115mph. I'd wager the M550i would put yellow school bus lengths between it's tail lights and the front grille of the 335d before hitting a mile......
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      07-17-2017, 04:49 PM   #32
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Quote:
Originally Posted by SilverRevlis View Post
The stock and heavier M550i is showing you it's much quicker than that tuned 335d......the trap speed tells us that this N63tu powered missile is going 115mph. I'd wager the M550i would put yellow school bus lengths between it's tail lights and the front grille of the 335d before hitting a mile......
Yes. Trap speed understanding would have prevented more than a few posts here.

The S6 for example - runs a low 12 at 115 MPH. These cars are very close to identical. People see a quicker ET and ignore the MPH trap speed. And the track conditions, and the DA and other factors...

Fantastic DA, less weight from due to less fuel for example, and better traction from less psi in the tires and you are at the same ET.

You need that actual 1/4 mile experience though to understand that.
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      07-17-2017, 04:59 PM   #33
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Quote:
Originally Posted by SilverRevlis View Post
Quote:
Originally Posted by Tengocity View Post
Certainly a quick car, but Is it all that impressive?

As a point of comparison I've done 12.8@108mph in a 335d remapped to 360bhp. I'd have thought this would have been quite a bit quicker than that.

Makes me feel less annoyed that they aren't going to sell them in the UK though.
The stock and heavier M550i is showing you it's much quicker than that tuned 335d......the trap speed tells us that this N63tu powered missile is going 115mph. I'd wager the M550i would put yellow school bus lengths between it's tail lights and the front grille of the 335d before hitting a mile......
It's showing me it's quicker, still doesn't seem that much quicker. 0.4 seconds at those speeds is about 50-60 ft ahead at a very quick bit of rough maths.

So, yes it's quicker, the absolute least I'd expect, but still feels like it should be further ahead.
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      07-17-2017, 05:02 PM   #34
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Quote:
Originally Posted by Tengocity View Post
It's showing me it's quicker, still doesn't seem that much quicker. 0.4 seconds at those speeds is about 50-60 ft ahead at a very quick bit of rough maths.

So, yes it's quicker, the absolute least I'd expect, but still feels like it should be further ahead.
Lol.
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      07-17-2017, 08:03 PM   #35
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Quote:
Originally Posted by Crashnbrn5 View Post
EDIT: YOU can see the time in the video. You need a nice computer screen to see.

Thanks for the reply. I just know there is more potential somewhere, just on a better day. Lower temps, more miles on the engine, etc etc. I know my best run is 12.6 at 111 with my 335GT tuned. and it weighs 4000lbs, plus I'm 218. I have about 400 to the crank. So I'm sure the new 550 can hit 12 flat stock with better variables.
I have a fairly latge computer screen thank-you (72")...I was on my phone.

I think I will take the time to point out your ET and trap to show you that math is always involved in racing. 12.6 at 111 is literally about perfect when you see I went 12.3 at 115. 115 MPH however is good for about 11.9-12.0 in the most optimum of conditions.

What I love about trap speeds is - I don't even need to run an ET if I don't want to (using a car inrace for example and don't want to risk breaking) - because once I know the trap speed - unless I REALLY want that slip (which in the past I will admit I have) - I don't need to because I know what the car is capable of.

It's really handy.
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      07-17-2017, 08:16 PM   #36
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Quote:
Originally Posted by Crashnbrn5 View Post
12.3 is bad actually guys. Maybe when the engine is even more broken in. 12 is more accurate and I'm sure the OP was having a bad day (Technically).

This Audi below hit 12.2 and its not the RS6 which is the M5 competitor



Then that means that the M550's direct competitor does the quarter at pretty much the same time. I don't get your point?
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      07-17-2017, 08:17 PM   #37
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And I agree with others. Trap speed says a lot. Sometimes more than the ET's.
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      07-17-2017, 10:10 PM   #38
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Quote:
Originally Posted by Tengocity View Post
Certainly a quick car, but Is it all that impressive?

As a point of comparison I've done 12.8@108mph in a 335d remapped to 360bhp. I'd have thought this would have been quite a bit quicker than that.

Makes me feel less annoyed that they aren't going to sell them in the UK though.
On a hot and humid July day your 12.76 would have been a 13.26.
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      07-17-2017, 10:31 PM   #39
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The slight delay in upshifts is intentional. All BMW automatic transmissions since 2006 behave in this manner to aid longevity. Fuel and spark are interrupted to cut <500 RPMs to prevent slamming into the next gear. The DCT in the F10 M5 does not do this.
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      07-17-2017, 11:25 PM   #40
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Quote:
Originally Posted by perezr10 View Post
On a hot and humid July day your 12.76 would have been a 13.26.
Lol - correct...
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      07-17-2017, 11:26 PM   #41
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Quote:
Originally Posted by dba1t View Post
The slight delay in upshifts is intentional. All BMW automatic transmissions since 2006 behave in this manner to aid longevity. Fuel and spark are interrupted to cut <500 RPMs to prevent slamming into the next gear. The DCT in the F10 M5 does not do this.
I was fairly confident it was intentional and not a trans issue. That said - even a tune to remove this - without adding boost or timing - would add another few tenths.

The car has a lot of potential.
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      07-17-2017, 11:51 PM   #42
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Quote:
Originally Posted by vtknight View Post
Quote:
Originally Posted by perezr10 View Post
On a hot and humid July day your 12.76 would have been a 13.26.
Lol - correct...
You've no idea the weather conditions of my run, nor whether I was using launch control or any other factors that may be at play.

If you're saying there is 12 dead in there then you can't be happy with that time either.

So in one thread 0.4 seconds has gone from a massive difference to now just the difference between a hot day or a cold day in my car, or how much quicker you think you can go if you just practice harder...
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      07-18-2017, 06:18 AM   #43
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Quote:
Originally Posted by Tengocity View Post
You've no idea the weather conditions of my run, nor whether I was using launch control or any other factors that may be at play.

If you're saying there is 12 dead in there then you can't be happy with that time either.

So in one thread 0.4 seconds has gone from a massive difference to now just the difference between a hot day or a cold day in my car, or how much quicker you think you can go if you just practice harder...
Practice harder? I'm laughing because you have no idea what you are talking about. Re-read the thread. I've been racing for almost 30 years and besides stating 10 times mechanically there are few improvements as the run is using launch control and auto - the conditions of the car and the track/weather (DA) conditions are easily capable to provide a 12.0 run due to the TRAP speed (a concept lost on you it seems) - I've wasted enough time responding.

As I've said - I am fortunate that this is my daily - not my race car.

https://www.youtube.com/watch?app=de...&v=geyVvpnG-Ig
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      07-18-2017, 06:33 AM   #44
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Quote:
Originally Posted by vtknight View Post
Practice harder? I'm laughing because you have no idea what you are talking about. Re-read the thread. I've been racing for almost 30 years and besides stating 10 times mechanically there are few improvements as the run is using launch control and auto - the conditions of the car and the track/weather (DA) conditions are easily capable to provide a 12.0 run due to the TRAP speed (a concept lost on you it seems) - I've wasted enough time responding.

As I've said - I am fortunate that this is my daily - not my race car.

https://www.youtube.com/watch?app=de...&v=geyVvpnG-Ig
Ever heard of sarcasm?

Don't take yourself so seriously!

But you still haven't explained how 0.4 seconds is a massive difference when it suits you but somehow going to be the difference between the same car depending on the weather!

And your trap speed is even worse given a 0-60mph time of less than 4 seconds.
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