[ksoze]

Originally Posted by modthispny

the m850 motor definitely has more power though than the g30 m550i though, since it does the 1/4 in about .04 sec faster with a 1-2 mph higher trap. I would probably put the m850 motor as somewhere in between the stock g30 m550i and dinan tuned g30 m550i.

Interestingly, both engines specs are essentially identical but the gear ratios are higher for the first three gears on the M850, which would increase acceleration.

I am convinced the M550iX was aggressively underrated with the then still pending M5 due out, which would have had an expected larger gap in HP.

[modthispny]

Originally Posted by ksoze

Interestingly, both engines specs are essentially identical but the gear ratios are higher for the first three gears on the M850, which would increase acceleration.

I am convinced the M550iX was aggressively underrated with the then still pending M5 due out, which would have had an expected larger gap in HP.

good observation here. BMW can keep the same motor from the 2017-2019 M550i but rate it at 523hp for the 2020 model and still be on the money.

[VirtualGuitars]

Originally Posted by modthispny

yup, you're onto something. the n63 used in the pre-lci 7 series and current 650i is rated pretty much on the money, whereas the n63 used in the g30 m550i is very underrated, making the 540/595 figures as you mentioned stock.

the m850 motor definitely has more power though than the g30 m550i though, since it does the 1/4 in about .04 sec faster with a 1-2 mph higher trap. I would probably put the m850 motor as somewhere in between the stock g30 m550i and dinan tuned g30 m550i.

As long as I can continue to beat my friend's M4, then I'm good with my 2019 M550ix.

[Strangec]

So if the 8 Series engine is already in the M550, is there any reason to wait for the 2020 model?

[ksoze]

Originally Posted by Strangec

So if the 8 Series engine is already in the M550, is there any reason to wait for the 2020 model?

It's not yet. The M550 currently uses the N63TU2 and the 8 series the N63TU3, which is rumored to be in the next M550.

[clubspec330i]

Originally Posted by Strangec

So if the 8 Series engine is already in the M550, is there any reason to wait for the 2020 model?

I have '18 M550 and for a strange reason it feels just as fast as my '18 X6M. Though, X6M seems to pull to redline where M550 power seems to taper off after 6k rpm. It could just be my car but M550 can give X6M a run for its money 0-80. That being said, I think actual HP number may be closer to 490-500 from factory. To me, anything over 400 with AWD is more than plenty. Would I take 530HP or 453HP? Of course I would. Though, if I want to get a car in the next 5-6 months, I am not holding my breath for 2020 to come out.

[mobilejo]

Originally Posted by clubspec330i

I have '18 M550 and for a strange reason it feels just as fast as my '18 X6M. Though, X6M seems to pull to redline where M550 power seems to taper off after 6k rpm. It could just be my car but M550 can give X6M a run for its money 0-80. That being said, I think actual HP number may be closer to 490-500 from factory. To me, anything over 400 with AWD is more than plenty. Would I take 530HP or 453HP? Of course I would. Though, if I want to get a car in the next 5-6 months, I am not holding my breath for 2020 to come out.

It should - your M550i is lighter and even on official specs is faster 0-100kmph than the X6M.

These fast SUV's are 'fast for SUVs', but the weight, height, aerodynamics and handling mean that less powerful cars can be faster. Its not always about the raw BHP.

[sitcom323]

Here's my theory/prediction:

1. BMW historically underrates their engines. Current 456HP is prob closer to 485-500 per a lot of people. Easy to find the dyno posts here and elsewhere.
2. New engine prob closer to real 530HP rating.
3. Performance improvement will be good but not HUGE as a gain of 70+ HP would suggest.

[mobilejo]

So what makes you think they're not under rating the new engine?

Based on that same history, they are under rating the new one, and the difference will be bigger than the 70bhp suggested by the numbers...

[ksoze]

Originally Posted by mobilejo

So what makes you think they're not under rating the new engine?

Although BMW traditionally underrates their engines, the M550 appears to be in a much larger way based on dyno results. The M5 dyno'd much closer to spec as did other cars. There is some suspicion the M550 was underrated more severely possibly due to the then incoming M5, which would have had much less of a gap in the hoopla which proceeded it when the M550 was released. The N63B44TU3 in the M850 may indeed be underrated at 523HP, but one suspects not at the same possible 80HP gap the N63B44TU2 appears to be in the M5550.

[VirtualGuitars]

Originally Posted by mobilejo

So what makes you think they're not under rating the new engine?

Based on that same history, they are under rating the new one, and the difference will be bigger than the 70bhp suggested by the numbers...

I suspect it's because the current M550i beats last year's M5. That wouldn't look good from a marketing perspective if a regular 5-Series vehicle had more horsepower than the flagship M5. Now that the new M5 is out, they can probably be a little closer to actual hp.

That's what I think anyway.

[modthispny]

Million dollar question. The n63tu3 definitely seems underrated based off the car and driver test for the m850i that i posted last week.

0-60 mph 3.3
0-100 mph 7.6
0- 150 mph 18.5 sec

1/4 mile 11.5@123 mph

Even when you compare youtube acceleration videos between the M550i and M850i, the M850i is definitely faster especially as the speeds increase.

still waiting for other magazines to test though, so will see because all of the tests last year for the m850i was just a few tenths of a second faster.

With that said, Gintani tested the M850i on a Mustang Dyno with 460hp/542lb ft stock, one of the members here tested their M550i with muffler cut out which i doubt will add any hp & a custom intake and it made 455 hp and 461 torque.

[modthispny]

OK, so interesting revelation here. Motor Trend just tested the 2019 M850i and the times are a lot more consistent with what we expected and what we saw last year.

https://www.motortrend.com/cars/bmw/...t-test-review/

0-60 3.5
11.9 sec @ 116.1 mph

7 mph is a huge disparity between the 2. What’s interesting is in the same issue Car & Driver tested the Bentley Continental GT and had identical 0-60 and ¼ time and trap. I wonder if there was a typo of some sort?

I understand elevation, weather, etc, can all play a huge role here so would be interesting to see what Road & Track gets when they test the M850i.

[Sheharyar_rr]

The current M550i has tons of headroom left. I still can't believe my car does 11.0 @ 125 with just a tune and downpipes

[tjohnson]

The M550i is 4,414lbs compared to 4,478lbs of the M850i. That's an extra 9hp needed just to keep the same speed numbers.

Not to mention the extra $35,000 for the 850 compared to the 550.

[AMLSMART]

As mentioned above, I too have heard from dealers in NY that there are no changes to the 2020 M550i (since such an upgrade in HP would put it too close to the M5).

By the way, I've had my M550 for almost a month, and just got my first pull up, stare down / check out, then cheerful "thumbs up" from a guy in a M5.

[dhruvgarg]

Any comments from dealers on iDrive 7 in g30 this summer for 2020 model?

[Skyrider01]

As mentioned in some of the previous posts, when I ordered my 2019 M550 last month, my dealer told me as well that no changes were planned for the 2020 model.

[The J-Man]

It is unlikely that dealers have the information on 2020 yet. They often get it from the internet just like everybody else.

[BMWAUDIO]

Lol my F10 M5 w/ Pure Stage 2 turbos No methanol put down 695 on the same mustang dyno at Alex @ Gintani's .
I would love to see what a M550i or M850i w/ pure stage 2 and a Gintani tune would do .
I'm willing to bet a stock turbo will do 550 whp w/ a Gintani tune and probably closer to 600 w/ turbos

Originally Posted by modthispny

Million dollar question. The n63tu3 definitely seems underrated based off the car and driver test for the m850i that i posted last week.

0-60 mph 3.3
0-100 mph 7.6
0- 150 mph 18.5 sec

1/4 mile 11.5@123 mph

Even when you compare youtube acceleration videos between the M550i and M850i, the M850i is definitely faster especially as the speeds increase.

still waiting for other magazines to test though, so will see because all of the tests last year for the m850i was just a few tenths of a second faster.

With that said, Gintani tested the M850i on a Mustang Dyno with 460hp/542lb ft stock, one of the members here tested their M550i with muffler cut out which i doubt will add any hp & a custom intake and it made 455 hp and 461 torque.

[BMWAUDIO]

If every auto dealer told every prospective buyer the '20 will have xx more hp it would jeopordize the purchase . They will not say it until the new model is out .
I personally would love to order a new M550i in Frozen Artic or Frozen Dark silver but will wait for the 2020 model so hopefully it will get the new motor
Congrats on the car enjoy it and in 1-2 years you can trade it in for a new one.

Originally Posted by Skyrider01

As mentioned in some of the previous posts, when I ordered my 2019 M550 last month, my dealer told me as well that no changes were planned for the 2020 model.

[Pictor]

I would be surprised if the 2020MY would get the TU3. The LCI is due next year as a 2021MY with production starting in the summer of 2020.