1M suspension vs. E9X M3 / 135i sport / BMWP suspension... differences, similarities?

[Kamal]

Does anyone have any insight into the suspension that will be offered on the 1M? Will it be similar, or the same, to the E9X M suspension compenents (or the BMWP components)? I'm looking into suspension setups and was curious about this... the idea of having the 1M suspension on the 135i is piquing my interest.

Tried searching already but didn't come across anything.

[MarkR171]

AFAIK, the 1M uses the M3 chassis and suspension.

[Kamal]

That's what I had assumed and if that's the case then HP Autowerk's E8X to M3 suspension kit would essentially do the job. I'd love to get some hard facts on the various components and find out if there are ANY differences.

[swamp2]

Originally Posted by MarkR171

AFAIK, the 1M uses the M3 chassis and suspension.

No suspension only. The "chassis" is the unibody and perhaps the subframes which are both different. The sway bars are probably different as well along with the spring and damper rates. Other than this is will be just the suspension arms that are truly identical. From a practical point of view calling it the "suspension" that is the same is accurate enough.

[Kamal]

Originally Posted by swamp2

No suspension only. The "chassis" is the unibody and perhaps the subframes which are both different. The sway bars are probably different as well along with the spring and damper rates. Other than this is will be just the suspension arms that are truly identical. From a practical point of view calling it the "suspension" that is the same is accurate enough.

Good to know. I assume you've gathered this info just reading up on the 1M?

[spiderz17]

Originally Posted by swamp2

No suspension only. The "chassis" is the unibody and perhaps the subframes which are both different. The sway bars are probably different as well along with the spring and damper rates. Other than this is will be just the suspension arms that are truly identical. From a practical point of view calling it the "suspension" that is the same is accurate enough.

I thought I read somewhere that the 1M uses the M3 subframes... not sure of a source, though.

[HERR FSTIR]

Originally Posted by swamp2

No suspension only. The "chassis" is the unibody and perhaps the subframes which are both different. The sway bars are probably different as well along with the spring and damper rates. Other than this is will be just the suspension arms that are truly identical. From a practical point of view calling it the "suspension" that is the same is accurate enough.

I believe in Dr. Segler's "walk around" video he indicates the 1M shares the same subframe with the M3. I have also read from separate sources that the two vehicles share the same "body pan". This last item confuses me since as unibody vehicles I would not expect the chassis could be altered as such.

Control arms should be the same, but agree springs/dampers will be different. Dampers are aluminum which I believe is an evolution of the current M3.

Obviously no EDC.

[eeghie]

For those of you who are planning to see the car in person, can you please zoom-in / focus your camera on the stickers on the rear shocks.

I'm curious to find out on the shocks used and if they are geometrically equal to either E9X or E82?

http://www.1addicts.com/forums/images/smilies/iono.gif

[Redadair]

One important piece missing from the add on kits is the overall track increase of the 1M which would require the fenders to be widened to accommodate the increase.

The new BMW 1 Series M Coupe has been developed for near-perfect balance and a large, square footprint. It is 71 inches (1803mm) wide – 4.8 inches (122mm) wider than its 1988 M3 ancestor - yet only 1.3 inches (33mm) longer at 172.4 inches (4379mm) long. The new 1 Series M Coupe weighs in at 1,495kg DIN (3,296 lbs, preliminary), and features a 104.7-inch (2659mm) wheelbase, three inches longer than the 1988 M3. Front and rear track widths are exactly the same on the 1 Series M Coupe at 60.7 inches (1542mm) each. Compared to the 2011 BMW 135i Coupe, the 1 Series M Coupe is 0.2 inches (5mm) longer, 2.1 inches (53mm) wider, 0.5 inches (13mm) taller, and rides on the same 104.7 inch (2659mm) wheelbase. It features a track 2.8 inches (71mm) wider up front and 1.8 inches (46mm) wider in the rear, and weighs 35kg DIN (77 lbs, preliminary) less.

The new 1 Series M Coupe features a high-strength steel unibody, with unique, widened fenders and rear quarter panels to house the substantially widened track.

[marcel b]

the 1M has Alu schocks, which is a development of the M3 shocks. They are not equal! And indeed, the 1M has the whole subframe (also in the front) of the M3 with optimized suspension parts. This is not comparable with some M3 bits you can fit in your 135i

[eeghie]

Originally Posted by marcel b

the 1M has Alu schocks, which is a development of the M3 shocks. They are not equal! And indeed, the 1M has the whole subframe (also in the front) of the M3 with optimized suspension parts. This is not comparable with some M3 bits you can fit in your 135i

Hi Marcel, do you mean damping characteristics r not equal or geometrics r not equal?

If you don't mind me asking, how do you know they are not equal?

[eeghie]

Originally Posted by formula M

Are they the same..? (Length?) Is that what you are asking?

Primarily looking to find out:
1. what parts(#) are on the 1M
2. if they are geometrically (= length & mounting) similar to either 1 or 3 series parts

Eventually:
3. differences in damping characteristics as compared to answer 2. This might be hard to define without testing on the car.

[marcel b]

Originally Posted by eeghie

Hi Marcel, do you mean damping characteristics r not equal or geometrics r not equal?

If you don't mind me asking, how do you know they are not equal?

because it was stated they are a further development. And it was written they where made of Alu.
Also I believe the dampers are adapted on the car. (weight etc) to make it perform best.

[eeghie]

The suggestive part of question 2 is based on my expectation for modular design techniques that I think BMW also uses. Particularly in a short time frame design the likelihood of fitting a shock that is based on existing dimensions and characteristics should be high.

At the moment I hope the forum members can help me with the fact finding (images of the labels on the shocks, ... ) I try not to use BMW's marketing talk for this, as they use many relative terms.

Background for my research is to the interest to fit adjustable shocks They would allow for a focussed daily/sporty suspension setting.

PS does anyone know who the OEM supplier of BMW M3's EDC shocks is?