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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > M3 Suspension Upgrade?



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      12-14-2017, 01:37 PM   #1
e90bs
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M3 Suspension Upgrade?

Wondering if it is worth to upgrade the front suspension in my 07 328i RWD 6SPD

M3 Sway Bar Upgrade
M3 front and rear Control Arm Upgrade

https://www.fcpeuro.com/products/bmw...e93-bmwmcaktfr

Is it worth it? Or should I just replace with OEM parts?

Thanks in advance
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      12-14-2017, 02:00 PM   #2
sunny
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stock sport suspension offer good street ride and when you get closer to M3 spec, you get very harsh street ride.

what is more important to you?
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      12-14-2017, 03:01 PM   #3
djh2
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I did the front upper/lower control arms to replace mine (leaking hydraulic bushings) (DIY) I noticed a slight increase in harshness over bumps, but it's nothing major. This is on non-runflats.

The M3 (or TRW branded with bmw logo ground off) have solid inner bushings rather than hydraulic, which is generally the cause for increased harshness. Plus side is they wont leak. From FCP you'd be covered on parts warranty either way.

You'll need an alignment afterward, the "wishbone" control arm will increase your track width and cause excessive toe-in. Drive safely to the shop if your tie rods are frozen like mine were.
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      12-15-2017, 08:46 PM   #4
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I just picked up M3 front and rear sways with bushings. Planning on install in a few weeks. Going on my 2011 328i E91 Wagon. Also doing a few track days. So Iím hoping itís worth it.
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      12-16-2017, 01:13 AM   #5
tlow98
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Quote:
Originally Posted by sunny View Post
stock sport suspension offer good street ride and when you get closer to M3 spec, you get very harsh street ride.

what is more important to you?
Wut?
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      12-16-2017, 06:51 PM   #6
Go Horns!
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Do the front control arms (they are not going to give you a harsh ride; really hard to think of any detriment).

The rear control arms are not an upgrade; waste of your money (if you search on the 1 series forum you can find a write up on them).

The sway is optional. The answer to that one is "it depends." You should upgrade springs and shocks before doing the sway. Search for reviews of the sway bar.
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      12-16-2017, 08:47 PM   #7
FlaPatsFan
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Quote:
Originally Posted by Go Horns! View Post
Do the front control arms (they are not going to give you a harsh ride; really hard to think of any detriment).

The rear control arms are not an upgrade; waste of your money (if you search on the 1 series forum you can find a write up on them).

The sway is optional. The answer to that one is "it depends." You should upgrade springs and shocks before doing the sway. Search for reviews of the sway bar.
Good point, and my springs and shocks are upgraded. Sways were the next step towards tracking the car. I will post a review after install and use.
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      12-20-2017, 04:32 PM   #8
isjoey
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Quote:
Originally Posted by e90bs View Post
Wondering if it is worth to upgrade the front suspension in my 07 328i RWD 6SPD

M3 Sway Bar Upgrade
M3 front and rear Control Arm Upgrade

https://www.fcpeuro.com/products/bmw...e93-bmwmcaktfr

Is it worth it? Or should I just replace with OEM parts?

Thanks in advance
TRW is an OEM part supplier to BMW, so they are OEM fyi.

I have done all the M3 bits and more on my 335is. In regards to arms and bars, you will notice a little improvement. Mostly though only under harder driving or track driving. The front arms do give a -0.25 of extra camber, which helps outside tire wear, a bit. You will more than likely not benefit much from upgrading the rear arms on a 328i unless you are going to the track. The bars will help the car stay flatter in turns of course. None of this will result in a rougher ride. You will have more feedback in the steering wheel from the road and tires.

Optionally, you could go with coilovers, like Ohlins, which will completely transform the handling and ride of the car. I had Ohlins R&T on my 335is and sold them. All of the M3 arms, bars, sub-frame bushing, diff, etc. are still on. My 355is feels similar to driving my Ford Explorer. Coilovers are a huge step up!
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