Benefits of solid subframe bushings on a stock car

[dbyrd]

Originally Posted by Ant Man

Malek - I'm thinking of pairing solid aluminium subframe bushes with Black series diff bushes.

In your opinion, would 95 shore A material as used in Powerflex Black series diff kit allow move NVH than the stock bushes?
Cheers.

I thought that I would respond as I did just this a few months ago. I did the Bimmerworld solid subframe bushings and the Powerflex Black 95A diff bushings. As others have reported, zero additional NVH from the solid subframe bushings.

I did get an ever so slight diff whine at highway speeds while maintaining steady throttle. It bothered me for a day, then I grew to like it and/or not notice it. If you think that would be a problem, go with the softer Powerflex diff bushings.

[Ant Man]

Originally Posted by dbyrd

I thought that I would respond as I did just this a few months ago. I did the Bimmerworld solid subframe bushings and the Powerflex Black 95A diff bushings. As others have reported, zero additional NVH from the solid subframe bushings.

I did get an ever so slight diff whine at highway speeds while maintaining steady throttle. It bothered me for a day, then I grew to like it and/or not notice it. If you think that would be a problem, go with the softer Powerflex diff bushings.

Thanks for feedback, that sounds (no pun intended) that it is likely something I can live with and perhaps not notice soon afterwards like you.

Have you had other passengers in your car and did they notice?

[dbyrd]

Originally Posted by Ant Man

Thanks for feedback, that sounds (no pun intended) that it is likely something I can live with and perhaps not notice soon afterwards like you.

Have you had other passengers in your car and did they notice?

No one noticed including my wife, but my exhaust was moderately loud. You will hear a slight whine when maintaining a stable highway speed.

[M3 Number 86]

Originally Posted by ashtaron14

Solid Subframe Bushings WILL NOT add NVH
Solid Differential Bushings WILL add NVH

Benefits
- You will get less wheelspin from the get go
- You can feel what the rear is doing
- You get a better feel of the mechanical grip versus tire grip, increases confidence in car

After all the upgrades I've done to my car, Solid Subframe Bushings is the best thing you can do to an E9x M3 to make it feel more alive.

How do you feel a difference vs the same thing?

[Mr. E92]

From my understanding. It eliminates rear squat on the car. It connects more true feedback in what the rear section of the car is doing.

Ive heard a lot of hear say on aluminum bushings being "to rough" and I have looked at other forums and talked to people that use them. They say there isn't to much of a change in driving feel. As far as comfort goes.