What sway bars are you M3 e92s using :)

[335 oClock]

Hey guys, I've got an e92 335i and want to upgrade sway bars... I wanted to know what you M3 fellas upgrade your sway bars too, might as well jump up to that rather than the traditional upgrade to OEM M3 sway bars

Thank you,

[italyix]

Not an E92 owner, but an E90 and I just ordered RD Sport Sways.

[335 oClock]

Originally Posted by italyix

Not an E92 owner, but an E90 and I just ordered RD Sport Sways.

Just saw those as well; why those over the Hotchkis?

[MKE_M3]

stock

[MienAce]

when it come to swaybar bigger is better, just get anything that bigger and adjustable.

[italyix]

Originally Posted by 335 oClock

Just saw those as well; why those over the Hotchkis?

Hollow (RDSport) vs solid

having read up on them, hollow is recommended over solid when other suspension is introduced, such as the KW Springs I also bought. Solid is good when car is left stock.

[IMG]

I had a 135 and all what i can tell you,Do the subframe bushings before doing anything else.made my car feel more planted.
Im running RD sport on my E90 M3

[Richbot]

I'm using the RD Sport front swaybar, currently on the stiffest setting.

It definitely settles the car down in transitions and makes it more responsive to mid-corner throttle adjustments. The downside is a little more steady-state understeer at high speed. I'm sure pairing it with the bigger rear helps balance it out some, this car doesn't need any more rear bar, springs are where you want to get your roll stiffness in the back IMO, unless you need a lot of squat for a super high hp application or something

The RD sport front bar with Turner steel adjustable endlinks is about half a pound heavier than the stock hollow bar and stock aluminum endlinks.

[335 oClock]

Originally Posted by italyix

Hollow (RDSport) vs solid

having read up on them, hollow is recommended over solid when other suspension is introduced, such as the KW Springs I also bought. Solid is good when car is left stock.

Originally Posted by img

I had a 135 and all what i can tell you,Do the subframe bushings before doing anything else.made my car feel more planted.
Im running RD sport on my E90 M3

Originally Posted by Richbot

I'm using the RD Sport front swaybar, currently on the stiffest setting.

It definitely settles the car down in transitions and makes it more responsive to mid-corner throttle adjustments. The downside is a little more steady-state understeer at high speed. I'm sure pairing it with the bigger rear helps balance it out some, this car doesn't need any more rear bar, springs are where you want to get your roll stiffness in the back IMO, unless you need a lot of squat for a super high hp application or something

The RD sport front bar with Turner steel adjustable endlinks is about half a pound heavier than the stock hollow bar and stock aluminum endlinks.

thank you all for the input! anybody have a link where I could get the RD with links?

also, I will do my subframe bushings with the rear sway bar, I was planning on going M3 subframe bushings, unless there is betteR?

[shuggy]

E90 here, not E92.

Went with the Dinan Fronts only and was installed at Bullet Performance in Costa Mesa which builds track M cars. Install took 30 minutes. Has improved turn-in and tightened the feel on the steering wheel a tad bit.

Not a frequent track racer so can't provide any more technical or overly insightful comments.

[klammer]

Have the Dinan sway, but am about to change to the RDsports and am getting the rear installed with the TMS delrin subframe bushings as they're both a PITA. Just as a side note, the sways are more in anticipation of fully upgrading my suspension, not just a stand alone mod. And yes, another E90

[Porschefile]

Stock feels pretty good to me.

[Sean@PYSpeed.com]

Many use RD Sport! =)

[Porschefile]

After some looking around, I will probably get RD Sport if and when I decide I need new bars. They're reasonably priced and have actual data on stiffness for each setting, look good to me.

[TC Kline Racing]

We're still running stock sways on the E90 M3 (shown in sig). We don't recommend changing the rear bar, but going bigger in the front. With just our TCK DA's and Hoosiers, we're turning 1:39's at Laguna, just to give you a point of reference.

[AlteredBe4st]

Anyone using the H&R front sways, I would love to get the RD but they only sell as a set.

[edwinm3]

Getting sways For just street performance to me a waste of money. I've done it on my previous M's. Now if you're gonna track the car that's a different story. My .02

[RickyBobby]

Originally Posted by TC Kline Racing

We're still running stock sways on the E90 M3 (shown in sig). We don't recommend changing the rear bar, but going bigger in the front. With just our TCK DA's and Hoosiers, we're turning 1:39's at Laguna, just to give you a point of reference.

Have you done any testing with a front swaybar in conjunction with coilovers and proper spring rates?

[TC Kline Racing]

Originally Posted by RickyBobby

Have you done any testing with a front swaybar in conjunction with coilovers and proper spring rates?

No we have not.

[AlteredBe4st]

Originally Posted by TC Kline Racing

No we have not.

Is it ok to use h&r front sway without the rear? I have used sway bars before on other vehicles and it does make a difference just not sure if I want to go through all the hassle involved in installing the rear on the M3. Again anyone out there that has the front installed without the rear please chime in.

[joe@trinityautosport]

I'm using RDSport front/rear sway bars

[HP Autosport]

Originally Posted by RickyBobby

Have you done any testing with a front swaybar in conjunction with coilovers and proper spring rates?

I don't think there is one or even two proper spring rates. Each tuner/driver will have their preferences. We have seen spring rates all over the place back in the days when we competed in Redline Time Attack with our 335i against ER and Berk's 135i. We were running 500F and 900R along with the E93 M3 front bar and stock rears(started with E90 M3 rears) and that was where our driver likes it. ER ran as high as 800F and 1000+R on car that weighs 300+ lbs lighter. Were they faster? Just some of the time and it wasn't by much.

Once spring rates are sorted out most will find no need to add a bar or is only adding it to balance the car.