[justpete]

Originally Posted by robc1976

my full replacment poly bushing I just found out mushroomed abd looks to be cracked. I am going with these

http://www.turnermotorsport.com/p-11...m-e82-e9x.aspx

That's what I have installed and they work very well. An alternative would be these AKG Motorsport 75D Shore Polyurethane bushings, at the bottom of the page.

[robc1976]

Originally Posted by justpete

That's what I have installed and they work very well. An alternative would be these AKG Motorsport 75D Shore Polyurethane bushings, at the bottom of the page.

you have the Delrin?

[justpete]

Originally Posted by robc1976

you have the Delrin?

Yes, those exact same Turner parts.

[robc1976]

Originally Posted by justpete

Yes, those exact same Turner parts.

I need your full feelings on them if you don't mind!

[justpete]

Originally Posted by robc1976

I need your full feelings on them if you don't mind!

No issues with them. The car is no longer quiet or smooth riding or comfortable, mostly, so it's nearly impossible to tell if they would've made a difference by themselves. I do know that the rear end doesn't want to get wobbly when hitting a bump in a turn, the difference is really obvious. Wouldn't hesitate to use them again. The parts exist so they can be used in racecars where a certain percentage of a bushing has to not be metal otherwise the solid aluminum parts would be preferred. I'm sure I couldn't begin to tell the difference though.

[Techevo]

Originally Posted by robc1976

don't think the op is going on the Nurburgring A's also have to realize it is more than just the "coilovers" that let him win this. I will say DFV (ohlins) are much better on other platforms...on this one, I have to say no. I know you know a lot about suspension so I am a bit surprised you don't think this also.

The Renault Megane Trophy R isn't that much different to the Megane RS250 Cup, (I own one), one of the main differences is the fitment of the Ohlins DFV.

To be fast around the 'Ring, you need a compliant suspension system (that still has to control the wheel/tyre properly), which works really well on bumpy roads, similar to on British roads (and a lot of poor roads around the world!), which is also why so many manufacturers test their road cars there. That was the point I was trying to make. The DFV is an excellent road biased suspension.

Is there better for track work?, of course there is, but for all round road use, at this price point, they are hard to beat.

[JJBA223]

nice

[D's Bimmer]

I think this is great advice for most people on here. I have gone down the coiler route and found myself back to the B12 kit and absolutely love it. The drop, the performance and the ride quality. Not to mention the durability.

Originally Posted by MIL.SPEC

From someone who has upgraded about everything on their other car (Evo), I would suggest the KISS school of thought. The Bilstein B12 kit is a good kit. I'm going to get it for my 335 here in the next month.

You start messing with coilovers, you get into a whole new universe of stuff that needs to get upgraded...camber plates, bushings, rebuilding shocks...etc.

Not to mention, most of the lower level priced coilovers are garbage. If you put them on a shock dyno, you wouldn't like what you saw. I have a remote reservoir setup on my Evo. It handles fantastic. But unless you plan on seriously autocrossing or tracking your car, just going with something simple like the Bilsteins is probably the "best" choice. Otherwise, you start playing Russian Roulette with the slippery slope of car modifications.

Final reco:

Buy Bilstein B12 kit. http://www.turnermotorsport.com/p-22...n-package.aspx

Get new suspension components for install: http://www.ecstuning.com/BMW-E92-335...its/ES2622813/

Buy Whiteline rear subframe insert kit: http://www.whitelinesuspensionparts....FUeBfgodHmYAbg

Then see how you like everything. Of course do more research if you want, but that is a good starting point for a DD.

[Nguyenhu0106]

i agree with all the guys about the b12, its good drop, and once shocks gets broken in.. they are awesome.

i had sport suspension on before and this rides more comfortable, more quite, and handle alot better when you load it in a corner.
i had a small review and i posted a pic of the drop on here.
http://www.e90post.com/forums/showth...=658818&page=2

[MIL.SPEC]

I've now had the B12's on for a few thousand miles. It's exactly what I wanted. I am also happy with the Whiteline inserts. The rear end doesn't float anymore. Also, something to consider are the Dinan pieces that add 10mm travel to the rear of the car:

http://www.dinancars.com/product/d11...-335i-335is-2/

With the new 18" ARC-8 rims and the PSS with 235's in the front and 265's, I am taking on ramps and off ramps at similar speeds to what I was doing in the Evo (not that I was pushing the Evo). But the confidence with the B12 kit and better rubber is pretty darn good for a luxury car. Car handles great even without an LSD.

So for simplicity's sake, I highly endorse the B12 kit. And the Whiteline rear inserts. And the Dinan piece. And lighter wheels and wider rubber lol

[parabmw]

What are the spring rates for b 12?

[Timujin]

Originally Posted by MIL.SPEC

I've now had the B12's on for a few thousand miles. It's exactly what I wanted. I am also happy with the Whiteline inserts. The rear end doesn't float anymore. Also, something to consider are the Dinan pieces that add 10mm travel to the rear of the car:

http://www.dinancars.com/product/d11...-335i-335is-2/

With the new 18" ARC-8 rims and the PSS with 235's in the front and 265's, I am taking on ramps and off ramps at similar speeds to what I was doing in the Evo (not that I was pushing the Evo). But the confidence with the B12 kit and better rubber is pretty darn good for a luxury car. Car handles great even without an LSD.

So for simplicity's sake, I highly endorse the B12 kit. And the Whiteline rear inserts. And the Dinan piece. And lighter wheels and wider rubber lol

Great to hear. Also great to see a SoCal EVO member here. I ran the GT Worx springs with the MR Bilsteins on my last EVO & loved it.

The B12 setup is where I am headed for my E90. Maybe for the summer after I remount the PSS. I am running 17" RFTs for the harsh SoCal "winter"

[WreckerX5d]

Originally Posted by Timujin

Great to hear. Also great to see a SoCal EVO member here. I ran the GT Worx springs with the MR Bilsteins on my last EVO & loved it.

The B12 setup is where I am headed for my E90. Maybe for the summer after I remount the PSS. I am running 17" RFTs for the harsh SoCal "winter"

The B12 kit was a great setup, the shocks alone are awesome. I had to swap back into stock springs, but I might just change them for the sport springs instead. NY roads are too shitty for the B12 kit. It's a great kit on smooth roads, but once you start adding in the mass amounts of pot holes, it becomes too harsh.

[dbjb]

Originally Posted by MIL.SPEC

I've now had the B12's on for a few thousand miles. It's exactly what I wanted. I am also happy with the Whiteline inserts. The rear end doesn't float anymore. Also, something to consider are the Dinan pieces that add 10mm travel to the rear of the car:

http://www.dinancars.com/product/d11...-335i-335is-2/

With the new 18" ARC-8 rims and the PSS with 235's in the front and 265's, I am taking on ramps and off ramps at similar speeds to what I was doing in the Evo (not that I was pushing the Evo). But the confidence with the B12 kit and better rubber is pretty darn good for a luxury car. Car handles great even without an LSD.

So for simplicity's sake, I highly endorse the B12 kit. And the Whiteline rear inserts. And the Dinan piece. And lighter wheels and wider rubber lol

Great addition to the thread... I'm a bit torn. Unsure what to do. This thread has me thinking.

Current setup includes front M3 arms, HR Sport springs, Koni Yellows and Wavetrac LSD. Love the setup for the most part. However, do not like the rear end. Feels a little loose. I have Whiteline inserts on order. I'm certain that will tighten it up a bit. However, I am not satisfied with the dampening in the rear. Tried softer, tried stiffer. Rear sits a little too low and don't like the feel when driving through high-speed undulations. Now, to be fair, my suspension has been on a few years so perhaps that's the miss.

Do you think switching to new B12 kit with Whiteline inserts will be a vast improvement? I know your opinion may be subjective but I'm trying to get a general idea and would rather not spend the time and money if there'll be little improvement.

[MIL.SPEC]

Originally Posted by dbjb

Great addition to the thread... I'm a bit torn. Unsure what to do. This thread has me thinking.

Current setup includes front M3 arms, HR Sport springs, Koni Yellows and Wavetrac LSD. Love the setup for the most part. However, do not like the rear end. Feels a little loose. I have Whiteline inserts on order. I'm certain that will tighten it up a bit. However, I am not satisfied with the dampening in the rear. Tried softer, tried stiffer. Rear sits a little too low and don't like the feel when driving through high-speed undulations. Now, to be fair, my suspension has been on a few years so perhaps that's the miss.

Do you think switching to new B12 kit with Whiteline inserts will be a vast improvement? I know your opinion may be subjective but I'm trying to get a general idea and would rather not spend the time and money if there'll be little improvement.

Honestly, coming from the Evo, the rear subframe float drove me bonkers. Having the rear end oscillate back and forth driving down the 405N into the valley irritated the hell out of me. Glad it's gone.

I would try the inserts first and see how that helps. You could also add the Dinan pieces. Not sure if it will fix your issue, but adding travel to the rear can't hurt. Plus, they're both relatively inexpensive options that don't require a ton of labor.

The rear end on the BMW still feels a little heavy. May just be a characteristic of the platform. I know I can go over bumps in the Evo (dips in the road), and the car doesn't pitch too much. With the B12 kit, the car is much improved, but the pitch isn't gone. Then again, I have an über set of remote reservoir coilovers on the Evo, so it's not exactly a fair comparison

Originally Posted by Timujin

Great to hear. Also great to see a SoCal EVO member here. I ran the GT Worx springs with the MR Bilsteins on my last EVO & loved it.

The B12 setup is where I am headed for my E90. Maybe for the summer after I remount the PSS. I am running 17" RFTs for the harsh SoCal "winter"

I have an MR, so it came with the Bilsteins standard. Loved them WAY better than the KYB's on regular Evos. Then I couldn't stop the mod bug and got the Paul Gerrard custom-valved Ohlin's. Was going to upgrade to Muellerized R&T's, and then a niced used set of Motons popped up and I jumped on it. They're great, but definitely not an install-and-forget it option. Good thing the Evo isn't my DD anymore

[dbjb]

Great advice mil.spec.

Will start with inserts and go from there but it's difficult getting them. Second time my order has been canceled with different vendors. Last one informed me that Whiteline is currently OOS. Damn it :/ Perhaps I should email them directly to get an ETA.

[MIL.SPEC]

Originally Posted by dbjb

Great advice mil.spec.

Will start with inserts and go from there but it's difficult getting them. Second time my order has been canceled with different vendors. Last one informed me that Whiteline is currently OOS. Damn it :/ Perhaps I should email them directly to get an ETA.

Tons of people were out of stock. This is where I got mine:

http://www.aftermarketsuspensionpart...s-E92-2007.htm

They're second from bottom

[Boosted920]

Pt # KDT918 ?

Thanks

[DrRobert]

The Dinan RUSM will help reduce rear up-and-down bounce when hitting a bump while going straight (assuming your springs and dampers are well matched). The subframe bushings (or inserts) will reduce rear end side-to-side wiggle you get when hitting a bump while turning. Two different kinds of rear end instability on this platform IME, with 2 different fixes.

[Jsoboti]

Originally Posted by MIL.SPEC

Tons of people were out of stock. This is where I got mine:

http://www.aftermarketsuspensionpart...s-E92-2007.htm

They're second from bottom

Did you notice the exhaust sitting lower after installation of the inserts due to extra material causing the subframe to sit lower?

[cvc 22349a]

Originally Posted by DrRobert

The Dinan RUSM will help reduce rear up-and-down bounce when hitting a bump while going straight (assuming your springs and dampers are well matched). The subframe bushings (or inserts) will reduce rear end side-to-side wiggle you get when hitting a bump while turning. Two different kinds of rear end instability on this platform IME, with 2 different fixes.

The rear subframe also moves up and down with subframe bushings. The springs (especially stiffer springs) when compressed pry the rear subframe away from the chassis. Only solid mounts would eliminate that.

[MIL.SPEC]

Originally Posted by Boosted920

Pt # KDT918 ?

Thanks

Correct. The other one is a full bushing replacement.

Originally Posted by Jsoboti

Did you notice the exhaust sitting lower after installation of the inserts due to extra material causing the subframe to sit lower?

No. As far as I am aware, the bushings just fill in the void area and eliminate excess subframe movement.

Originally Posted by cvc 22349a

The rear subframe also moves up and down with subframe bushings. The springs (especially stiffer springs) when compressed pry the rear subframe away from the chassis. Only solid mounts would eliminate that.

Are you sure about this? Unless the spring is physically longer, I don't see how it could "pry" the subframe away. And when compressed, there may be more force exerted on the subframe, but that's to combat the extra damping of the upgraded struts/shocks.