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The X4 is a baby X6 and shares a platform with the F25 X3. The F26 X4 is the ultimate combination of sporty and sports utility.

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  #1  
Old 11-10-2018, 06:58 PM
HEKTO HEKTO is offline
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M Sport Differential on X4

Hello Guys,

I'm considering purchase of 2019 X4 M40. There is "M Sport Differential" option available. Does anyone know if and when I will feel difference while driving?

Thank you in advance
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  #2  
Old 11-11-2018, 12:44 AM
Armand Armand is offline
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Where did you you see this option called out for the X4? I didn't know we had that option. I'm also interested in the M40! too

As for the feel, there are various discussions on bimmerfest. If you plan to drive aggressively in extreme conditions (snow, mud etc.), this option may come in handy but otherwise it might not make a difference.
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Old 11-13-2018, 08:09 AM
yangqi yangqi is offline
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I think that option gives you ability to lock the car to RWD only.
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Old 06-24-2019, 11:32 AM
leejim leejim is offline
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X3 M4.0i sport diff?

Hi , I am getting a new M40i in two weeks and it comes with the M sport diff as standard eqt, is thisbwhat you are talking about ?
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Old 06-25-2019, 10:30 PM
Armand Armand is offline
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Quote:
Originally Posted by leejim View Post
Hi , I am getting a new M40i in two weeks and it comes with the M sport diff as standard eqt, is thisbwhat you are talking about ?
In The US for MY 2019, M Sport Diff is an option for 20" or 21" sport wheel/tire selections. I drove an M40i without the option pretty hard and handling was fantastic! I eventually opted for one without it. If it's standard equipment where you live, then good for you!
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Old 12-07-2019, 11:48 PM
leejim leejim is offline
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M Sport Diff.

Hi on my M40i came with the M Sport Diff but also , 21"wheels, Roof Rails for a rack and metallic paint .
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Old 12-08-2019, 12:06 AM
Autoputzer Autoputzer is offline
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The M Sport differential in in the back, and it keeps the rear wheels spinning at roughly the same speed. With an "open" differential, the wheel with less traction will slip on the pavement first, and then start going faster than the wheel that still has traction. With and "open" rear differential, 2WD becomes 1WD, and the one wheel getting the power is the one that doesn't have any traction.

BMW's without a limited-slip or locking differential prevent this low-traction slipping by applying the brakes to the rear wheel that's slipping. But, that wears out the back brakes fast... really fast, and probably doesn't stop the low-traction slipping under severe flogging.

Most limited-slip or locking differentials are purely mechanical devices. But, that's too simple for BMW. So, theirs are actuated by signals from the a computer, and based on input from various sensors.

. money well spent.
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