01-16-2013, 04:41 AM | #23 | |
Private
6
Rep 52
Posts |
Quote:
R.
__________________
650i Coupe
|
|
Appreciate
0
|
01-16-2013, 09:28 AM | #24 | |
Private First Class
6
Rep 147
Posts |
Quote:
In the automatic, I suppose Sport mode probably holds gears longer, which could make a difference, but cruising in either mode wouldn't, I'd think, be any different from an MPG or oil perspective, and even hammering it the difference would be on the margins, at the top of gears. In the 6-speed, Comfort mode engages a rev matching feature which is fun for downshifts, though pointless, and is really really annoying in town or around speed bumps. If I'm coasting with the clutch in in, say, 2nd gear, it holds revs up high, which is just stupid sounding. A downshift heading into a turn also won't provide the deceleration I want, since the revs match to the wheel speed, and it takes longer for the engine braking to be effective. Short story, I hate Comfort mode. I find it useless at best, and annoying at worst. |
|
Appreciate
0
|
01-16-2013, 03:22 PM | #25 |
Second Lieutenant
167
Rep 297
Posts |
Well if you drive 50 in comfort-mode your revs are lower than in sport-mode so obviously you use more gas in sport-mode...
Or am I wrong here?
__________________
F82 M4 - extended black leather - fully loaded - H
|
Appreciate
0
|
01-16-2013, 06:25 PM | #26 | |
Lieutenant
20
Rep 549
Posts |
Quote:
|
|
Appreciate
0
|
01-17-2013, 09:11 AM | #27 |
Private First Class
6
Rep 147
Posts |
Interesting. If revs go up for the same speed when switching from Comfort to Sport, you must be dropping a gear. I wonder if Sport drops 6th gear (or whatever the tallest gear is in the autos)?
In the stick, I never go into 5th, and skip from 4th to 6th. Really, 3rd is tall enough to get to cruising speed, but there's no real need generally to top it out. I'll drop for 6th to 4th to pass or if I need a pop of power. |
Appreciate
0
|
01-18-2013, 03:10 PM | #28 |
Private First Class
35
Rep 133
Posts |
Going to sport mode from comfort definitely drops a gear on the freeway. The auto is an 8 speed. While cruising on the freeway in 8th gear switching to sport will drop it down to 7th. The throttle mapping also holds the gears much longer resulting in constant higher rpm and therefore higher gas consumption. The gas mileage definitely is affected while in sport mode....not that it matters!!! lol
|
Appreciate
0
|
01-18-2013, 03:13 PM | #29 |
Captain
185
Rep 763
Posts |
|
Appreciate
0
|
01-19-2013, 08:53 AM | #30 |
Captain
185
Rep 763
Posts |
I don't even see 2013 6er models in this list. Besides, I would tend to believe the BMW website and press releases over some website that tries to collect data on every vehicle on the planet. Especially when the two former sources agree.
That said, I cannot be 100% certain unless I open the diff and count the ring and pinion gear teeth myself. 640s may have different ratios than 650s, but I think we were just discussing 2012 650 vs 2013 650. |
Appreciate
0
|
01-20-2013, 09:57 PM | #31 | |
Private First Class
6
Rep 109
Posts |
Quote:
The links below are for the 2012 and 2013 6er brochures: 2012 BMW 6 Series Brochure (Zmag) 2013 BMW 6 Series Brochure (pdf) 2012 650 final drive ratio 3.08 (pg 66) 2013 650 final drive ratio 2.81 (pg 66)
__________________
2015 M6 Drophead Coupé
2015 328xd Estate 2013 X5M Sport Utility Vehicle |
|
Appreciate
0
|
01-21-2013, 11:18 AM | #32 |
Captain
185
Rep 763
Posts |
Agreed. I looked at the wrong column (640i) on attached when I posted the 2012 ratio. Still a ~9% taller ratio for 2013.
The Tu equiped cars must have been demonstrating increased consumption during development so BMW decreased the final drive ratio. Regardless, the 2013s are still faster. I'm curious how the N63 vs N63Tu equiped 6ers would feel drivability-wise side-by-side given the taller ratio in the latter and the slightly different torque curves. I wonder if any of this is even noticable under normal driving. |
Appreciate
0
|
01-22-2013, 04:46 AM | #33 | |
Private
6
Rep 52
Posts |
Quote:
The 2013 should be a bit faster given the engine output, but 10% on the final drive is quite a lot. I would really like to see these two cars tested against each other. My bet - somewhere between 0.1 and 0.2 s. Interestingly, in the local (Australian) spec, the 0-100kmh spec is given at 4.9s, the same as your 0-60 mph. But 100kmh = 62.13mph, so converted to 0-60mph, our spec says 4.7s for the 2012. R.
__________________
650i Coupe
|
|
Appreciate
0
|
01-22-2013, 11:31 AM | #35 | ||
Captain
185
Rep 763
Posts |
Quote:
Quote:
|
||
Appreciate
0
|
01-22-2013, 07:04 PM | #36 |
Private First Class
6
Rep 109
Posts |
Okay, you guys forced me to do some math.
2012 2nd gear at 7,000rpm = 57.5mph 2013 2nd gear at 7,000rpm = 63.1mph So add at least 0.2s for the additional shift.
__________________
2015 M6 Drophead Coupé
2015 328xd Estate 2013 X5M Sport Utility Vehicle |
Appreciate
0
|
01-23-2013, 11:37 AM | #37 |
Captain
185
Rep 763
Posts |
Give or take, there's 0.2 of the 0.4 sec difference in roadsta's post above. Still would be interesting to see these cars side by side. It's not the first to speed that wins. It's the first to distance.
Of course, there's far more to these cars than 0-60. If I wanted to drag race, I'd buy a....no I wouldn't. |
Appreciate
0
|
01-23-2013, 06:25 PM | #38 |
Private First Class
6
Rep 109
Posts |
And that's one of the many reasons I prefer xDrive!
I assume I'll need to take my 650xi to the track and see how it compares to Dinan 550xi. That car could hit 0-60 in less than 4.0 secs.
__________________
2015 M6 Drophead Coupé
2015 328xd Estate 2013 X5M Sport Utility Vehicle |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|