[RJC-1]

than the M850's 0-60 and only "up to" 0.5 seconds in the QM...there really must be something to the M850's being significantly underrated as the dyno testing has revealed...wow!

"I've told you how much power you're dealing with, but let me contextualize it for you. The M8 flings itself to 60 mph from a stop in 3.3 seconds. That's damn quick for a big car, though it's only a tenth or two quicker than the less extreme, less powerful M850i and a tenth or three slower than a heavier M5. The quarter-mile mark flies by in 11.4 seconds when you're traveling at 124.6 mph, splitting the difference between two M5s we tested but finally gapping the M850i by up to half a second".

https://www.motortrend.com/cars/bmw/...pe-first-test/

I've tried to find some drag race videos between the two, but have found none thus far.

[Resjudicata]

Originally Posted by RJC-1

than the M850's 0-60 and only "up to" 0.5 seconds in the QM...there really must be something to the M850's being significantly underrated as the dyno testing has revealed...wow!

"I've told you how much power you're dealing with, but let me contextualize it for you. The M8 flings itself to 60 mph from a stop in 3.3 seconds. That's damn quick for a big car, though it's only a tenth or two quicker than the less extreme, less powerful M850i and a tenth or three slower than a heavier M5. The quarter-mile mark flies by in 11.4 seconds when you're traveling at 124.6 mph, splitting the difference between two M5s we tested but finally gapping the M850i by up to half a second".

https://www.motortrend.com/cars/bmw/...pe-first-test/

I've tried to find some drag race videos between the two, but have found none thus far.

the m8 wasn't out when I got my m850i, but I'm sure the m8 competition is faster than m850i. it's like $80,000 more.

[RJC-1]

Originally Posted by Resjudicata

the m8 wasn't out when I got my m850i, but I'm sure the m8 competition is faster than m850i. it's like $80,000 more.

The M8 was tested in the article and they were referring the the M8 Comp when the said "up to" 0.5 secs faster in the QM...the M850's are the deal of the century.

[Ozzie8]

One of the things that attracted me to the m850i is it just looks like a big cruisey coupe but when you want to go for it, there is very little on the road (here) that can stay with you. So it hits the spot.

[Neptune7]

Pretty sure the M8C can do a sub 3-sec 0-60 and sub 11 QM. Both mags and individuals have accomplished this with the M5C and the M8C is lighter and lower.

[Resjudicata]

Originally Posted by Neptune7

Pretty sure the M8C can do a sub 3-sec 0-60 and sub 11 QM. Both mags and individuals have accomplished this with the M5C and the M8C is lighter and lower.

again, I haven't driven the m8c, but I'm lead to believe it's very different from the m850i.

For starters, they have different engines. why they are both v8, they have different codes, maintenance cycles, and settings. also one produces 550 hp, the other 600-617 hp. big difference of at least 10% power in the upper end.

[limeypride]

My M8C GC runs between 2.91s and 3.05s to 60 stock. I think I nailed a sub-11s 1/4 but I can't find it right now.

With just a JB4, she ran 2.59s to 60 and 10.4 dead in the 1/4.

Remember, DA on the day/location, traction, tire temp, fuel and the car (even the driver to some extent but LC in these cars is highly reliable) all make a difference.

That said, I raced an M850i Coupe in my 2020 M5 and was far too cocky... to begin with. I feathered the gas in 4th enough to get into my turbos and off she went but the M850i was right up my chuff still, so I floored and pulled away convincingly. Remember, though, that M5 was tuned and was a particularly fast M5 in my opinion--it didn't shame the M850 at all. Stock? I predict an M5C will still pull away from an M850 but I've never had the chance to try.

[RJC-1]

Originally Posted by Resjudicata

again, I haven't driven the m8c, but I'm lead to believe it's very different from the m850i.

For starters, they have different engines. why they are both v8, they have different codes, maintenance cycles, and settings. also one produces 550 hp, the other 600-617 hp. big difference of at least 10% power in the upper end.

The M850's bone stock are significantly underrated putting out ~600hp and there's the difference (separate previous thread on this with dyno results). I have been waiting to see exactly how well the bone stock M8's do on the Dyno/(Mustang) and have yet to find anything, if they are close to the #'s BMW published for the M8/C, it will explain MT's findings perfectly.

[Wolfman64]

I need to find a good road to do some draggy tests but Limey tested his GC as sub 3 sec. in stock form. Which is what I expected. The coupe should be maybe a touch quicker due to less weight.

In terms of a race, the mentioned half a second is a lifetime of course

That said, the 850 models are Big Bang for the buck and better yet when tuned but still I don’t get these journalists comments.
Why spend more for more?
Why would anyone get 911 TTs over a 4s or GTS?

Certain attributes just check the boxes...

[bloozemanAZ]

Originally Posted by Ozzie8

One of the things that attracted me to the m850i is it just looks like a big cruisey coupe but when you want to go for it, there is very little on the road (here) that can stay with you. So it hits the spot.

Agreed and the price point of the M850i just sealed the deal. Truthfully I originally had a $115K ceiling but raised it as the difference to pick up the M850i was worth it no questions asked.

Originally Posted by Neptune7

Pretty sure the M8C can do a sub 3-sec 0-60 and sub 11 QM. Both mags and individuals have accomplished this with the M5C and the M8C is lighter and lower.

Absolutely true as I've read reviews confirming the sub 3-sec zero to 60 but in all of Mat Watson's drag races he is pretty much at 11 seconds for the 1/4 mile. That said outside temperature plays a factor so sub 11s in a 1/4 mile is easily achievable with a M8C.

Originally Posted by limeypride

My M8C GC runs between 2.91s and 3.05s to 60 stock. I think I nailed a sub-11s 1/4 but I can't find it right now.

With just a JB4, she ran 2.59s to 60 and 10.4 dead in the 1/4.

Remember, DA on the day/location, traction, tire temp, fuel and the car (even the driver to some extent but LC in these cars is highly reliable) all make a difference.

That said, I raced an M850i Coupe in my 2020 M5 and was far too cocky... to begin with. I feathered the gas in 4th enough to get into my turbos and off she went but the M850i was right up my chuff still, so I floored and pulled away convincingly. Remember, though, that M5 was tuned and was a particularly fast M5 in my opinion--it didn't shame the M850 at all. Stock? I predict an M5C will still pull away from an M850 but I've never had the chance to try.

I have absolutely zero illogical thoughts in my head that my M850i could compete with a M5C nor M8C whatsoever. The game is likely on with a stock M5 but then it will all come down to the driver's competency behind the wheel of either car. I'm still learning to drive the M850i from a performance standpoint and this past weekend's road trip helped get me more comfortable behind the wheel while pushing the car to perform. By next year I may indeed be able to beat a stock M5 or have a little egg thrown in my face.

[RJC-1]

The point may just be, is just a couple of tenths worth the significant price difference? I suppose to some it may be, just not me. Now if there was a full second of difference in 0-60 and 5 mph+ more in QM traps then by all means yes.

[limeypride]

Originally Posted by RJC-1

The M850's bone stock are significantly underrated putting out ~600hp and there's the difference (separate previous thread on this with dyno results). I have been waiting to see exactly how well the bone stock M8's do on the Dyno/(Mustang) and have yet to find anything, if they are close to the #'s BMW published for the M8/C, it will explain MT's findings perfectly.

Yes, agreed--underrating power output is very typical for BMW. It wouldn't surprise me if the M850i is closer to ~600hp at the crank than the quoted numbers.

I haven't seen any dynos of M8s either so this will have to do. That said, considering the M8 is just an M5 underneath (especially GCs), these results are representative.

Here's my 2019 M5 stock. It is well worth noting that my 2020 M5 was faster in every sense but I never had it dyno'd (0.2s faster to 60 and 0.45s faster in the 1/4 mile). Finally, these are wheels numbers. I'm using a reasonably conservative 12% to approximate crank numbers (many claim 15% drivetrain loss but then others get accused of exaggerating so 12 it is):

STOCK

• 592ft Ibs to the wheels / 673ft Ibs to the crank
• 594hp to the wheels / 676hp to the crank

JB4

• 740ft Ibs to the wheels / 840ft Ibs to the crank
• 715hp to the wheels / 812hp to the crank

[limeypride]

Originally Posted by RJC-1

The point may just be, is just a couple of tenths worth the significant price difference? I suppose to some it may be, just not me. Now if there was a full second of difference in 0-60 and 5 mph+ more in QM traps then by all means yes.

It depends how you measure it--in car lengths, it's substantial so from the audience's standpoint, one car slays the other... especially in the 1/4 mile. Both cars are so fast, the numbers start to obscure the reality of the situation.

[RJC-1]

Originally Posted by Wolfman64

I need to find a good road to do some draggy tests but Limey tested his GC as sub 3 sec. in stock form. Which is what I expected. The coupe should be maybe a touch quicker due to less weight.

In terms of a race, the mentioned half a second is a lifetime of course

That said, the 850 models are Big Bang for the buck and better yet when tuned but still I don’t get these journalists comments.
Why spend more for more?
Why would anyone get 911 TTs over a 4s or GTS?

Certain attributes just check the boxes...

Originally Posted by limeypride

It depends how you measure it--in car lengths, it's substantial so from the audience's standpoint, one car slays the other... especially in the 1/4 mile.

I guess in real world non-track driving it's really not that important other than for perhaps bragging rights especially with them being so close. On the other hand, I used to mostly only drive 911 turbos vs the NA version b/c the difference even in street performance was so significant as they basically would annihilate most anything else on the road and by such a significant margin.

[bloozemanAZ]

Originally Posted by limeypride

It depends how you measure it--in car lengths, it's substantial so from the audience's standpoint, one car slays the other... especially in the 1/4 mile. Both cars are so fast, the numbers start to obscure the reality of the situation.

Totally agree, i.e., to the audience's standpoint. If you're sitting on the sidelines reading C&D, MT, YouTube, etc. reviews like I did for the past 6+ years dreaming about owning one of these cars (BMW M, AMG, 911s, etc.) the only thing you can go on is the raw number statistics for 0-60 and the 1/4 mile calling one better than the other. In reality they are all great cars and when it comes to actually buying one the numbers do indeed obscure the reality of the situation as all of them are damn fast and it comes down to personal choices that drive the actual buy.

After having done a few test drives and a weekend loan of the bare bones M850i my dealer used for the purpose I was sold. However, I still held off on the order until the M8/M8C ordering/pricing guides were released. There was that inner voice that said "I want something faster based on pure specs". However, once I optioned up the M8 or M8C to match what I wanted I could not justify the price over the M850i knowing that it met all of my needs. If I had visions of tracking the new car then I would have went all out on an M8C coupe.

[limeypride]

Originally Posted by RJC-1

I guess in real world non-track driving it's really not that important other than for perhaps bragging rights especially with them being so close. On the other hand, I used to mostly only drive 911 turbos vs the NA version b/c the difference even in street performance was so significant as they basically would annihilate most anything else on the road and by such a significant margin.

I don't know the intent of this thread but, for me, I see no value in pursuing it...

[Locopeds]

I wholeheartedly agree that when it comes to BMW's, it is like art...some people like Monet while others are into Dali. There is no question in my mind that the M8 is a stronger and better performance machine than an m850i. However, the stiffness of the ride and the constant restraint you have to have if you use it as a daily driver was not worth the headache or the wallet for me. The m850i GC to me is a perfect fit for someone who can drive his family in comfort, but have a blast when they're not around. I know it's not an M, but it's a darn great gentleman racer and I can wait until next time I can go shopping...just to step inside that beauty. Enjoy...for we are a lucky few my friends!

[Ozzie8]

Originally Posted by limeypride

I don't know the intent of this thread but, for me, I see no value in pursuing it...

It's very important for number plate street cred. Such as:

FKNFAST
2DOT58

[limeypride]

Originally Posted by Ozzie8

It's very important for number plate street cred. Such as:

FKNFAST
2DOT58

IFUSAYSO
POINTLSS
SLFSRVNG
ZEROSUMGAME... that's too long, isn't it.
OHWELL!

[Ozzie8]

Originally Posted by limeypride

IFUSAYSO
POINTLSS
SLFSRVNG
ZEROSUMGAME... that's too long, isn't it.
OHWELL!

HAHAHA
LOLLOL

Last one - I promise

[msm2000uk]

My tuned M850i did 0-62mph in 2.91 seconds as an average over four runs, and the power upgrade didn't cost me the £60,000 difference between an M850i and an M8!

M

[DRA]

Both cars are fantastic. I'd say if you don't track the car you don't need the M. If you track the car then you know the difference.