Koni rear spring

[Niagara Dave]

Hello everyone I find the ride stiff on the rear end of my car. Has anyone changed the rear springs to a softer spring rate? Does anyone have any suggestions on how to improve the ride quality. Keep in mind that I have a street car and not planning on racing it. I am running 20s with 35 series tires. I have reduced the tire pressure but it still rattles my kidneys when I hit a bump. Any help would be appreciated. Thank you

[Gordon Levy]

I dropped to a 250lb spring and was much happier.

[UnhipPopano]

If you wish to keep your car balanced, then you should consider changing the springs on all 4 corners. Do you now how much weight is on each wheel?

[Niagara Dave]

I have not checked the weight. How will that matter?

[Niagara Dave]

I dropped to a 250lb spring and was much happier.

Did you get the spring for I'm ff? Do you remember the part number?

[Gordon Levy]

I use eibach springs.

[myjones]

Keep in mind that the best front spring rate will be different from the back even if the car weighs the same F&B
because the fronts are inboard and the arms are 1.6 or 1.7 ratio IIRC.
When you get a good street ride you will be approaching the point of needing sway bar/s

A lot of 33's have changed the shocks too in search of better ride quality.
HTH
DB 7.0L Hemi33