M3 suspension parts on E82

[Todd]

I have searched but cant find solid answers on suspension needs for a new to me E82 135i coupe. I see most doing the front M3 arms, but cant see what is common to do on the rear suspension with M3 parts, arms and bushings wise.

Also what does it take to get an E82 to allow M3 fitment shocks to be installed ? Any input is appreciated on front and rear suspension options.

[dtla1]

For the rear, M3 subframe bushing is common. In my opinion however, a two piece subframe bushing such as the whiteline offering would be the better way to go in terms of ease of install.

[mistawall]

what i want to know is can i use my kw v3 coil overs if i want to swap in a m3 rear subfram and diff along with the front suspension bits

[swagon]

Originally Posted by mistawall

what i want to know is can i use my kw v3 coil overs if i want to swap in a m3 rear subfram and diff along with the front suspension bits

[dtla1]

I haven't done this myself, but I seem to remember if you change the whole subframe and diff from an m3 over, you also need to modify the drive shaft... $$$ and time (and time is more $$$)

[Pissoff]

Originally Posted by dtla1

I haven't done this myself, but I seem to remember if you change the whole subframe and diff from an m3 over, you also need to modify the drive shaft... $$$ and time (and time is more $$$)

+1 on having to modify the drive shaft

[B.M.W.]

M3 Front control arms & M3 Rear Subframe Brushings seem to be about the best improvement for the money.

Subframe brushings seem pretty hard to install though so I'm not sure if they'd be worth it over the whiteline bandaids. As far as durability though I've heard the M3's stay tight & the whitelines degrade to a certain point.

[I35it]

Also you can use the rear guide arm and one more from the m3.

As for the rear subframe you can run a complete m3 subframe and if your lucky you can just pick up a 1m drive shaft and call it a day.

[MotoWPK]

So the purported advantages of using M3 rear sub-frame bushing seems obvious, but what is the advantage of using M3 front control arms; stiffer bushings that come with the control arms or do they alter geometry?

[Dackelone]

OE vs M3 Rear Suspension Arms
http://www.1addicts.com/forums/showthread.php?t=1079383

M3 front control arms (Upper and lower) - A couple of $hundred less than everywhere
http://www.1addicts.com/forums/showthread.php?t=736789

New Suspension Installed w/ Quaife LSD - DIY
http://www.1addicts.com/forums/showt...4&page=1&pp=22


You can use the M3/1M rear alloy control arms... but you will need to replace the rear shocks with shocks made to be used on a M3/1M. The reason is the shock attaches to the control arm in a different way.

Maybe talk to Harold HP Autosport after all he was the first shop to figure out that all the M3 bits would/could bolt onto a e82 platform.

Dackel

[850tgul]

Originally Posted by B.M.W.

M3 Front control arms & M3 Rear Subframe Brushings seem to be about the best improvement for the money.

Subframe brushings seem pretty hard to install though so I'm not sure if they'd be worth it over the whiteline bandaids. As far as durability though I've heard the M3's stay tight & the whitelines degrade to a certain point.

Should distinguish between whiteline inserts vs their full bushing replacement. The inserts are a bandaid and imo not worth it. Their full two piece replacement kit is on par with M3 bushings but can be pressed in by hand so they are infinitely easier to install than the M3 kit.
I had the inserts and removed them for the full whiteline kit and have been very happy with them.

[MotoWPK]

Followed one of the above posts to the HP Autosport site where I see they indicate the E82 1M/E9x M3 Front Control Arm Kit by TRW adds 0.5 degree of camber.

So, is that it? Can anybody who's done this comment on what differences it made and, specifically, address the steering centering and weighting it made?

[ShocknAwe]

Originally Posted by MotoWPK

Followed one of the above posts to the HP Autosport site where I see they indicate the E82 1M/E9x M3 Front Control Arm Kit by TRW adds 0.5 degree of camber.

So, is that it? Can anybody who's done this comment on what differences it made and, specifically, address the steering centering and weighting it made?

No change in steering centering or weighting once you have it aligned properly. I have -1.7 front camber with just the alignment pins pulled and the M3 front arms.

[MightyMouseTech]

Originally Posted by MotoWPK

Followed one of the above posts to the HP Autosport site where I see they indicate the E82 1M/E9x M3 Front Control Arm Kit by TRW adds 0.5 degree of camber.

So, is that it? Can anybody who's done this comment on what differences it made and, specifically, address the steering centering and weighting it made?

The M3 arms add 0.5 camber. The main benefit is the improved inner bushings on both arms. The lower control arm gets an upgrade from the stock rubber bushing to a bearing, and the torque arm sees an upgrade from a very soft fluid filled bushing to a solid rubber bushing.

Makes for a lot less slop in the front end.

[MAMSport]

I'm a bit confounded with my recent purchase. It's a 2013 128i M Sport, but the previous owner changed to the M3 rear subframe bushings, M3 front control arms, and M3 rear trailing arms. There are tension rods that were changed as well. The springs and shocks are stock.

With the current wheels and tires (E46 M3 ZCP front wheels, 8 x 19" ET47 all around, with 225/35 front tires and 245/35 rear tires), I am getting an occasional tire rub on the outer edge of the tires (not the tread but rather the very edge of the tread/sidewall area) with only my weight and golf clubs in the trunk (i.e., no passengers) in situations such as extreme road dips or construction areas.

TireRack believes the wheel/tire configuration should fit satisfactorily and suggested asking people who may have made similar mods if they had similar experiences with reduced tire clearance.

Does anyone understand why this is occurring? Is this a common effect from doing such suspension mods? Does anyone have suggestions to eliminate this issue? I'm not convinced that using 18" wheels from the 135i with appropriate tires will be any different.

[litebulb]

2 years and no issues with my whiteline 2 piece, but I don't track my car.

Originally Posted by B.M.W.

M3 Front control arms & M3 Rear Subframe Brushings seem to be about the best improvement for the money.

Subframe brushings seem pretty hard to install though so I'm not sure if they'd be worth it over the whiteline bandaids. As far as durability though I've heard the M3's stay tight & the whitelines degrade to a certain point.

[Black Prinz]

http://www.1addicts.com/forums/showt...to+our+E8x%27s