[tomasis]

hello I drive e91 325i and I have been driving control arms with poly bushings a while (Strongflex).

Now my question is if I should run the original new wishbones bushings or replace it with another set of polys.

I ask because I've seen new kits that include original bushings of wishbones and everything else poly bushings.

I kind of got used to the sound of control arms. Relatively high NVH.

[tomasis]

For example, https://www.superproeurope.com/produ...vehicleid=1270

nr 2 ALOY0090K

[whyzee125]

Lots of variables here. Are your ball joints still quiet and tight? Are the strongflex bushings worn out? If the arms/ball joints are still good no need to replace them.

But IMO I would just get a new set of M3 arms or a monoball kit. M3 ones don't have much NVH increase at all and I've heard monoballs are only a step higher. They should be essentially maintenance free too (the monoball) whereas poly bushings are very prone to wear in joints that twist a lot like these.

[tomasis]

Originally Posted by whyzee125

Lots of variables here. Are your ball joints still quiet and tight? Are the strongflex bushings worn out? If the arms/ball joints are still good no need to replace them.

But IMO I would just get a new set of M3 arms or a monoball kit. M3 ones don't have much NVH increase at all and I've heard monoballs are only a step higher. They should be essentially maintenance free too (the monoball) whereas poly bushings are very prone to wear in joints that twist a lot like these.

I bought new control arms then I replaced new bushings with poly bushings. I ran them over 1 year. But the other pair of arms (wishbones) are pretty old. I suspect they are worn because the car is not acting straight in 130kmh. It could be anything else as well. I add new toe rods as well. Then it would be the whole new set of arms.

I prob replace poly bushings with monoballs one day. Im aware that polybushings have to be relubed every second year or so. Installing them was a pain in ass

I was wondering if M3 bushings will wear out. Prob not as many suggest buying monoballs along with new m3 arms.

[whyzee125]

Originally Posted by tomasis

I bought new control arms then I replaced new bushings with poly bushings. I ran them over 1 year. But the other pair of arms (wishbones) are pretty old. I suspect they are worn because the car is not acting straight in 130kmh. It could be anything else as well. I add new toe rods as well. Then it would be the whole new set of arms.

I prob replace poly bushings with monoballs one day. Im aware that polybushings have to be relubed every second year or so. Installing them was a pain in ass

I was wondering if M3 bushings will wear out. Prob not as many suggest buying monoballs along with new m3 arms.

The M3 parts are really solid and usually last well over 100k unless abused or living in an insanely dry climate. They're only like $300 something for the whole set of 4 with the headlight rod too. Best bang for your buck IMO

[tomasis]

Originally Posted by whyzee125

The M3 parts are really solid and usually last well over 100k unless abused or living in an insanely dry climate. They're only like $300 something for the whole set of 4 with the headlight rod too. Best bang for your buck IMO

ok good to know. My car is over 200k It is due time for replacement, I guess.

[Torgus]

m3 arms with monoball upgrade for starters.

If you want a big improvement I would look at your rear subframe bushings and diff. Granted on an N52 they are probably not as big an upgrade as on a modified n54.