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      07-23-2013, 04:21 PM   #1
Dackelone
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Arrow Our Answers to Your BMW 4 Series FAQ

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We recently asked for your questions regarding the BMW 4 Series and we brought those (together with some of our own) to the drive launch for the F32. Big thanks to all the gracious BMW representatives who patiently answered our questions.

Here's what we were able to find out for BIMMERPOST members.


Are there suspension or steering tweaks/improvements in the F32 compared to the F30?

The F32 is much more rigid than the F30. One way BMW has done this is by using a different suspension with extra V- or X- bracing from the subframes going back to the car's chassis. Also, the entire suspension is different from the F30. We know this car will be mostly driven with two people aboard and in a sporting way. Therefore, we have tuned the suspension for the performance minded driver who needs a coupe that can hold four people occasionally. BMW has tested its competitors car's chassis, and we (BMW) have the highest torsional rigidity in this class of car.

The F32's electric power steering has different programming to allow for a sportier experience.

How do the lower center of gravity and other suspension tweaks impact handling specifically?

While it's not something you can really feel, it's something you CAN measure. In a slalom or emergency lane change maneuver, it can be measured. The F32 is about 0.5 mph faster in a slalom (than the F30) and the car is more stable under a emergency lane change because the center of gravity is much lower than that on a F30.

Does the coupe still have sport suspension as standard?

No. It really was not standard on the e92 either (only initially when the car first launched). The F32 will come with a standard suspension, with two dynamic settings: Sport and Comfort. M Sport cars will have the same ride height as the standard suspension -- this is something new. Also, xDrive models will have a slightly higher ride height due to their use for driving on snow and ice.

Does the xDrive suspension on the 4 series have the same calibration as the F30's xDrive suspension calibration?

No, the F32 suspensions are all new in their tuning/damping.

Why is the xDrive version of the 435i faster than the non xDrive version, yet the same is not so for the 428i compared to the 428i xDrive?

Well... xDrive only adds about 70Kg's of weight to the car. And it really aids in low traction situations... so it should be no wonder why a car would be faster in acceleration from a stand still than a 2 wheel drive car. But, it should be noted that xDrive does add some weight where you really do not need added weight - in the nose of the car. This is why the M brand has deemed it less than "pure" for use in M models. But, for people who live in snowy areas... this is an acceptable trade-off for added traction in winter conditions.

How much more rigid is the 4 Series chassis than the E92 3 Series Coupe?

It is 60% more rigid, due to the use of added suspension cross bracing on the front and rear subframes linking the suspension with the car's chassis. We spend a lot of time on this - making the two door coupe stiffer.

How do the times around the Nurburgring compare to a similarly configured F30?

The coupe is faster than the sedan, but we do not have any 'Ring lap times to give you in terms of xx time vs yy lap times. We can say the F32 coupe is faster than the sedan due to the above mentioned chassis improvements.

Can we expect a M435i model in the future?

No plans of yet.

Any possibility for DCT transmission in the future?

No. The DCT will be for M models. The latest eight speed ZF automatic shifts so fast and cleanly, we do not see the need for a DCT.

It was rumored last generation that the coupes would form the 4 Series, but it was scrapped. What was it that made it happen this time around?

Not really my dept... so I can not answer as to why now. But, back then we did not have a X6 nor a 6 Series Gran Coupe, so the even numbering is fitting in with our model hierarchy. I think it makes it easier for the customer to know an even number is a coupe (or coupe-like) form and that odd numbers are our sedan models.

Any particular reason for the hood cutline position being in the middle of the hood instead of where it joins the grilles? Is there a technical reason for it?

There are a lot of reasons why, but mostly it is for pedestrian crash rules here in the EU and in the USA. We have to have "soft" areas in the front of the car and the only way to do this is to have that "cutline". We even make the hood of the car "softer" or more "friendly" to pedestrians impacts and design preformed crush areas of the hood for EU or US crash standards. But it's all a compromise, so we try to build a car that can meet all the modern day requirements today's car must meet and excel in.

* Some of the above has been paraphrased and are not word-for-word quotes.
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      07-24-2013, 10:14 AM   #2
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Thanks! The q&a is really helpful
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      07-24-2013, 12:24 PM   #3
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Will there be a 420 in U.S.?
If so, I will reserve my "munchies" personalized plate right now...
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      07-24-2013, 12:35 PM   #4
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Nice, Thank you
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      07-24-2013, 12:36 PM   #5
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REALLY REALLY REALLY hope that whatever tuning they did to the f32 steering can be applied to the f30. that's just so much BS in my mind. just because I need a car for 2 more people doesn't mean I want it to feel like im drivin a minivan. I buy a bmw cause I want a SPORTS SEDAN.

sigh ...
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      07-24-2013, 12:41 PM   #6
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Quote:
Originally Posted by Dackelone
Also, xDrive models will have a slightly higher ride height due to their use for driving on snow and ice
Does this imply the only reason sport and m sport x-drive f30's don't get the lowered sport suspension is because they're used for ice and snow??? I thought there were more technical reasons making it a bad idea to lower it? No one actually wants the higher ride height, ice and snow or not.
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      07-24-2013, 12:58 PM   #7
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interesting about the suspension - so it is not a "sports" suspension, but it has adjustable dampers??

I am confused as to what DHP offers on the 4 series then (or is it just std)...
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      07-24-2013, 01:05 PM   #8
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Quote:
Originally Posted by Booster
Will there be a 420 in U.S.?
If so, I will reserve my "munchies" personalized plate right now...
Lol, 420i with some nice rasta performance stripes... it would be perfect
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      07-24-2013, 01:06 PM   #9
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would love if xdrive msport models got the suspension upgrades as well. for us xdrive guys its hard to spend the $3500 on appearances alone.
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      07-24-2013, 01:08 PM   #10
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How about a diesel 4-series stateside?
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      07-24-2013, 01:15 PM   #11
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435 Covertible statside?

So, lots of news on the 435 coupe...what about the 435 convertible for ED?
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      07-24-2013, 01:38 PM   #12
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Thanks for posting this. It was interesting and informative.
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      07-24-2013, 01:47 PM   #13
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Thanks for asking the qs
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      07-24-2013, 02:49 PM   #14
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Quote:
Originally Posted by Dackelone View Post
Any particular reason for the hood cutline position being in the middle of the hood instead of where it joins the grilles? Is there a technical reason for it?

There are a lot of reasons why, but mostly it is for pedestrian crash rules here in the EU and in the USA. We have to have "soft" areas in the front of the car and the only way to do this is to have that "cutline". We even make the hood of the car "softer" or more "friendly" to pedestrians impacts and design preformed crush areas of the hood for EU or US crash standards. But it's all a compromise, so we try to build a car that can meet all the modern day requirements today's car must meet and excel in.

Well that explains a lot about the ugly cut line.
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      07-24-2013, 03:13 PM   #15
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Cool car, but still not sure if it's different enough from the 3 series to warrant a new name. Maybe future generations will differentiate more.
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      07-24-2013, 03:56 PM   #16
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So Sport Suspension is not standard nor it is standard with M-Sport trim - how do you get sport suspension in this car then?
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      07-24-2013, 03:56 PM   #17
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Quote:
Originally Posted by MY13E92M3
Quote:
Originally Posted by Dackelone View Post
Any particular reason for the hood cutline position being in the middle of the hood instead of where it joins the grilles? Is there a technical reason for it?

There are a lot of reasons why, but mostly it is for pedestrian crash rules here in the EU and in the USA. We have to have "soft" areas in the front of the car and the only way to do this is to have that "cutline". We even make the hood of the car "softer" or more "friendly" to pedestrians impacts and design preformed crush areas of the hood for EU or US crash standards. But it's all a compromise, so we try to build a car that can meet all the modern day requirements today's car must meet and excel in.

Well that explains a lot about the ugly cut line.
That doesn't explain anything and is pure BS... The X3 and X5 don't have this ugly line (although X1 has).

How do Audi and Merc manage to sell cars in Europe ? None of them have this ugly line on the hood.

Total bullshit...
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      07-24-2013, 04:03 PM   #18
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Quote:
Originally Posted by georgere View Post
So Sport Suspension is not standard nor it is standard with M-Sport trim - how do you get sport suspension in this car then?
The car has a adaptive suspension(comfort or sport settings/valving). The ride height is the same on all the 4er models. IF you want a lowered, more sporty suspension... you will have to look at the M Performance catalog, like one that was fitted to the white F32 I posted pics of(but then you loose the adaptive settings, and you get regular shocks). The M Perfomance car rides 10mm lower than the Coupe suspension - and the guys from M say it is the best of both worlds for comfort and sporty driving.
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      07-24-2013, 04:43 PM   #19
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I'm confused. So the adatpive damper is standard? Then what does the handling package do? Or is there difference between Adaptive Damper (Dynamic Handling Package) and standard "adjustable" suspension??
So either way will be able to control stiffness??
Above answer is confusing me even more :S
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      07-24-2013, 06:03 PM   #20
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the best thing for the m performance is that it includes special seats..
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      07-24-2013, 06:10 PM   #21
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Quote:
Originally Posted by Dackelone View Post
...

Why is the xDrive version of the 435i faster than the non xDrive version, yet the same is not so for the 428i compared to the 428i xDrive?

Well... xDrive only adds about 70Kg's of weight to the car. And it really aids in low traction situations... so it should be no wonder why a car would be faster in acceleration from a stand still than a 2 wheel drive car. But, it should be noted that xDrive does add some weight where you really do not need added weight - in the nose of the car. This is why the M brand has deemed it less than "pure" for use in M models. But, for people who live in snowy areas... this is an acceptable trade-off for added traction in winter conditions.

...
TY for following through in general with answering everyone's questions. That was very nice of you to do.

Regarding the one I cited above, I understand what you said, and I accept that it must be what the BMW people told you. I don't know that it answers the question for I a similar pattern of outcomes -- that is both cars 0-60 times go up or both go down, but not one up and one down -- from the installation of xDrive on the two cars. Even so, I appreciate your effort all the same.

All the best.
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      07-25-2013, 01:26 AM   #22
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Quote:
Originally Posted by Dackelone
The car has a adaptive suspension(comfort or sport settings/valving). The ride height is the same on all the 4er models. IF you want a lowered, more sporty suspension... you will have to look at the M Performance catalog, like one that was fitted to the white F32 I posted pics of(but then you loose the adaptive settings, and you get regular shocks). The M Perfomance car rides 10mm lower than the Coupe suspension - and the guys from M say it is the best of both worlds for comfort and sporty driving.
Did they mention how much higher the xdrive models ride than the standard suspension?
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