[scott@bmwhn]

interesting, Thanks for the updates

-Scott

[Mr. 5]

Originally Posted by stressdoc

Further update after getting summer rubber (Dunlop direzza Z1 race for rear and leftover Pirelli P0 on front). With sticky tires and warm termperatures I can get the car to move (sway). For a summer set up I would prefer something stiffer.

The BMW perf set up is a fine compromise for a more sporty Daily Driver. But it is not close to a full on race set up. Spring rates of about 200 front/500 rear are pretty tame. As are the sway bar and damper rates.

I would prefer getting the Swift springs, M3 sways, and better dampers. Might regret it on long trips and during the winter though.

I went with the M3 sways and it definitely makes a difference, but I don't know if I would go with stiffer springs. As you said, the long trips would suck IMO.

[Orb]

Originally Posted by Mr. 5

I went with the M3 sways and it definitely makes a difference, but I don't know if I would go with stiffer springs. As you said, the long trips would suck IMO.

Can I say.... I told you so

Orb

[VTGT]

Bumping up an old thread.

Wow, I told myself I was now going to mod my 335i when I get it. This thread is starting to sway my decision. I would probably wait until I get bored off stock suspension, or once the cars paid off Option two is probably smarter.

Modding is way to addictive. I need to deactivate this account while I am sane.

It is cool how much factory performance parts bmw offers, tischer is right up the street from me too

I wonder if tischer offers a discount on labor if I buy the kit from them. Oh wait didn't I say I wasn't buying it until my car was paid off.....d'oh

[bavarian19]

I know some people had subframe issues with the E46. Would putting our cars under more stresses from a stiffer suspension cause any subframe issues?

[stressdoc]

I don't think so. I have not subjected my car to repeated stress, but I have played a bit with rallye like conditions and the car is real solid. I plan to get the M3 strut brace up front and the Hotchkis chassis brace. Weight loss is a good way to reduce stresses. Non-rfts reduce jarring.

I really, really like this car. It handles great.

[flip4335]

Originally Posted by stressdoc

I really, really like this car. It handles great.

I guess I missed your thread on how the car handles now with the Quaife diff installed and the perf parts...any updates?

[stressdoc]

Originally Posted by flip4335

I guess I missed your thread on how the car handles now with the Quaife diff installed and the perf parts...any updates?

Don't remember if I ever sat down and put it all down in one place. I really am kicking myself for not doing before and after videos on a homemade autocross course. Might try this with my brother -- he has a virgin E90 330, so we can make some comparisons even though they are different cars.

The combination of the stiffer suspension and the Quaife is great. The car is much more predictable, you can steer with power, mushy wobbling much reduced, no off-again on-again power shifts from one wheel to the other when transitioning curves under power oversteer, etc.

Doing everything -- dampers, springs, sways, M3 parts & bushings -- results in a package with no weak links. Together with extreme perf non-rfts and a LSD, the 335 is pretty close to M3 handling. The cost is high, around 6k in parts and another 2k in labor, but you end up with the best of both worlds: M3 handling with N54 torque and fuel efficiency. The upcoming turbo M3 will obviously kick things up a few notches, as will the lightweight Z2. But for now, we have Porsche-like performance in practical DD cars at much lower cost.

In short, I really like this car. Goals now are to trim more weight, further stiffen chassis, and improve brakes. Starting to see the Z2 supersport in my future now though, don't want to flush too much $ down the Mod ceramic throne.

[hdrewh]

Hey guys, reading this thread gave me the itch.

With my '09 E90 328i sedan NON-zsp, but with the optional 17" low-profile all-seasons (225/45R17), would there be any problems with ride height or anything else if I went with the BMW Performance Suspension? I'd pick it up from Tischer (http://www.trademotion.com/partlocat...gid=4462&tab=1) and have my dealer install.

Thanks,
Howard

[stressdoc]

Originally Posted by hhendler

Hey guys, reading this thread gave me the itch.

With my '09 E90 328i sedan NON-zsp, but with the optional 17" low-profile all-seasons (225/45R17), would there be any problems with ride height or anything else if I went with the BMW Performance Suspension? I'd pick it up from Tischer (http://www.trademotion.com/partlocat...gid=4462&tab=1) and have my dealer install.

Thanks,
Howard

Should be fine. There will be a BIG difference!

[stressdoc]

I was doing a few acceleration and braking runs the other day, and one of the big differences that these suspensions mods make is reducing squat and dive. Another notable item is the continued absence of any squeaks, rattles, or klunks. Car remains tight as a drum. Kudos once more to the great install job that the tech did, and a possible point to consider when comparing OEM BMW Perf parts with other aftermarket stuff.

[bmrm396]

stressdoc - thanks SO much for all ur work on this thread/review. i think u single handedly have convinced me that this is the susp for my 2011 335 msport. i think ill end up gettin a thicker sway for the rear and i like the idea of a strut bar too.

curious about the height differences people r having though?

but thanks again this is awesome

[BrianMN]

Hey Stressdoc...I just noticed your dogs on page 2 and the distinct border collie crouch! Great looking gods! I've got 2 border collies myself...

[stressdoc]

Thinking we should put all these BMW Perf threads together, must be a dozen at least.

[Blue Liquid]

Can anyone recommend an experienced dealership for installation in central New Jersey? Thank you!

[Javi335]

Got another question too ... when people say doing the rear subrame bushing by yourself is a pain in the a** its because of the time it takes or the difficult? both?

[bradford]

Originally Posted by Javi335

Got another question too ... when people say doing the rear subrame bushing by yourself is a pain in the a** its because of the time it takes or the difficult? both?

Working on cars is never really all that difficult if you have the correct tools and have experience with the job. That being said, if you're a backyard wrench with limited tools (IE without the BMW bushing press/puller and air tools) and this is your first time doing it, I would consider the job both difficult and time consuming. The dealer bills 6.5 hours for the job. A n00b without all the right tools should bank on twice that, to be conservative.

[Javi335]

Originally Posted by bradford

Working on cars is never really all that difficult if you have the correct tools and have experience with the job. That being said, if you're a backyard wrench with limited tools (IE without the BMW bushing press/puller and air tools) and this is your first time doing it, I would consider the job both difficult and time consuming. The dealer bills 6.5 hours for the job. A n00b without all the right tools should bank on twice that, to be conservative.

Thanks sir

[stressdoc]

HPA now has the press for the rear subframe bushings available if you are going the DIy route. That said, a day doesn't pass that I don't thank my lucky stars for getting this work done at the dealer. Everything still tight as a drum.