11-01-2020, 12:08 PM | #1 |
Registered
6
Rep 3
Posts |
340ix vs m340ix 0-60
I’m sure it’s been asked a million times now. But how is it that the 2018 340i xDrive manages 0-60 in 4.9sec, while the 2020 m340i xDrive with only 62hp more does it in 3.5? Those numbers are based on C/D tested (4.9) and BMW claimed (3.5). I’ve also seen tested 0-60s of 4.1 for the m340i...
Either way and plus or minus a tenth, how does 62hp buy you nearly a second off of your 0-60? Or is that totally reasonable? |
11-06-2020, 02:40 AM | #2 | |
New Member
10
Rep 20
Posts |
Quote:
My opinion is that they didn't gained that 1.4s with hp only. It's all about combination of transmission, xdrive, tires, engine, lunch control, etc |
|
Appreciate
1
Hammer Werke102.50 |
11-17-2020, 12:41 PM | #3 | |
Petrolhead
1958
Rep 3,518
Posts |
Quote:
__________________
Current:
2020 BMW 330i xDrive 2018 Audi SQ5 Prestige 2017 Audi A7 Prestige |
|
Appreciate
0
|
12-07-2020, 04:48 AM | #4 |
Brigadier General
1981
Rep 3,988
Posts |
I honestly have no idea what you guys are talking about... the numbers you state look almost random.
F3x: BMW claims 4.9 sec 0-100 for xDrive and automatic gearbox. I for one have not seen people do appreciably faster with a stock car and measured with Dragy! If there is a record of this anywhere in the forum - please advise. G20: BMW claim 4.4 sec 0-100 for xDrive, automatic gearbox, limousine The difference in power delivery is 48 PS and 50Nm in favour of the G20. 0,5 sec reduction in 0-100 sounds about right to me Maybe some minor difference in the gearbox shifting contributed to 0,1 sec out of that, but generally it sounds about right.
__________________
"Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
Last edited by Skyhigh; 12-07-2020 at 06:50 AM.. |
Appreciate
1
J555571.50 |
12-07-2020, 08:43 AM | #5 | |
Colonel
2186
Rep 2,683
Posts |
Quote:
__________________
Bootmod3, CTS Catless DP, B58TU HPFP, XHP, BM3 Flexfuel Kit
|
|
Appreciate
0
|
12-07-2020, 10:31 AM | #6 |
Brigadier General
1981
Rep 3,988
Posts |
Why should that make a difference for 0-100 on a flat asphalt?
xDrive does a great job with the traction either way.
__________________
"Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
|
Appreciate
0
|
12-07-2020, 11:08 AM | #7 |
Colonel
2186
Rep 2,683
Posts |
Instead of a one wheel peel where xDrive is gonna send power to one side, it's going to split it between two wheels equally instead giving a better launch.
__________________
Bootmod3, CTS Catless DP, B58TU HPFP, XHP, BM3 Flexfuel Kit
|
Appreciate
0
|
12-07-2020, 11:14 AM | #8 |
Brigadier General
1981
Rep 3,988
Posts |
Are you sure we are talking about the same thing? First of all, I am not sure I understand your explanation, but more importantly an LSD is only useful in turns or when there is a loss of traction. We are talking 0-100 here, straight line, optimal conditions (for best time). Even without LSD, XDrive does not lose traction during such acceleration (assuming stock car). I for one have 0 traction problems when doing 0-100 on a dry surface. What is an LSD going to help me with?
An LSD solves traction problems better than an open differential. In this particular case however there is simply no problem to solve.
__________________
"Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
|
Appreciate
1
tomppa11.50 |
12-07-2020, 12:19 PM | #9 | |
Colonel
2186
Rep 2,683
Posts |
Quote:
__________________
Bootmod3, CTS Catless DP, B58TU HPFP, XHP, BM3 Flexfuel Kit
|
|
Appreciate
0
|
12-07-2020, 12:42 PM | #10 |
Brigadier General
1981
Rep 3,988
Posts |
Are we now suddenly talking about tuned cars (and why)!?
And no, XDrive's default is 40/60, but dynamically adjusted between 50/50 and 0/100.
__________________
"Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
|
Appreciate
0
|
12-07-2020, 05:45 PM | #11 |
Lieutenant
475
Rep 455
Posts |
340ix vs m340ix 0-60
He was using his car which is RWD with his setup explaining how it without an LSD can have trouble putting all that power down in lower gears. You also seem to miss the point that an LSD most certainly helps you actually put down the power to the wheels so that coupled with the X Drive system allows the car to actually plant its power and not wheel spin coming off of the line while doing so.
|
Appreciate
0
|
12-07-2020, 06:09 PM | #12 |
Lieutenant Colonel
826
Rep 1,597
Posts |
Tune to tune should be almost the same. Most 340i owners on the forum are running flash tunes so power-wise, there is only some little difference between the two for us and the M340i is heavier too.
|
Appreciate
0
|
12-07-2020, 08:19 PM | #13 | |
Brigadier General
1981
Rep 3,988
Posts |
Quote:
The problems a RWD/tuned car has are irrelevant here (I thought). And yes - an LSD can help overcome traction problems (putting the power down) if such a problem exists. That is however not the case for XDrive and a typical 0-100 in a straight line under optimal conditions (which is what those times are all about). There is nothing to "help" further - the power is already down with XDrive.
__________________
"Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
|
|
Appreciate
1
imperfectluck475.00 |
12-07-2020, 08:31 PM | #14 |
Lieutenant
475
Rep 455
Posts |
Skyhigh No worries, the comparison isn't exactly apples to apples even when trying to equate the hp aspect of it, we all know here that is only part of the larger equation.
I agree with your second point of the XDrive putting the power down vs RWD/tuned even with an LSD as I have that combo and have issues putting ~420hp power down. Circling back to the OPs point, I never like the peak hp comparisons as I prefer more of a "what does the power band look like" if just comparing numbers for numbers sake excluding the chassis and other important bits that contributes to the overall 0-60 times. |
Appreciate
2
Silverlining_m21754.50 Skyhigh1981.00 |
12-10-2020, 05:59 AM | #15 | |
Captain
572
Rep 611
Posts |
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|