[RaidersFan]

My E92 (2011) 335i has the M-sport package (the VIN decoder says that is M-sport suspension, not sure what that means exactly). It rides soft and squishy, and I was hoping to upgrade the suspension for spirited street driving. Looking at Koni Yellows. Should I do Eibach springs as well? What will I gain and lose from the springs? I assume a stiffer spring weight; what about ride height?

Any other thoughts or recommendations? Looking to keep the upgrade under $1k (Koni is on sale at BavAuto this month).

What would be the next improvement down the line, assuming I like the handing of the Koni Yellow setup?

[techwhiz]

Just upgrade to a sport shock.
If your suspension is squishy, your shocks are shot.
I'm running Bilstein B8 Sport shocks.
Some say go with the B6. YMMV
Koni's are also good.

I like the Bilstein warranty. They ship you a new pair if your old ones die.
They take a credit card deposit and don't charge it if they get the old shock back.

[RaidersFan]

Originally Posted by techwhiz

Just upgrade to a sport shock.
If your suspension is squishy, your shocks are shot.
I'm running Bilstein B8 Sport shocks.
Some say go with the B6. YMMV
Koni's are also good.

I like the Bilstein warranty. They ship you a new pair if your old ones die.
They take a credit card deposit and don't charge it if they get the old shock back.

I have a Bilstein HD from a 328i. Could I just install those, or would they be too tall to work the stock springs?

[derryck]

Originally Posted by techwhiz

Just upgrade to a sport shock.
If your suspension is squishy, your shocks are shot.
I'm running Bilstein B8 Sport shocks.
Some say go with the B6. YMMV
Koni's are also good.

I like the Bilstein warranty. They ship you a new pair if your old ones die.
They take a credit card deposit and don't charge it if they get the old shock back.

What he said...if your ride is 'soft and squishy' then something is wrong with your suspension.

[TheSt|G]

Koni and Bilstein are the two go to options. Both have lifetime warranties. The Konis tend to ride better at lower speeds, the Bilsteins tend to be a bit more indestructible over time. Both are solid upgrades.

If you are keeping the stock springs, both have tailor made struts for that ride height.

[RaidersFan]

Cool, thanks for the replies. What would a set of Eibach pro springs bring me besides a slight drop? Any real world change in handling or road feel? Or, are we just talking a change in cosmetics mostly?

[TheSt|G]

Originally Posted by dawgcatching

Cool, thanks for the replies. What would a set of Eibach pro springs bring me besides a slight drop? Any real world change in handling or road feel? Or, are we just talking a change in cosmetics mostly?

Significantly sped up stock strut failure, lower ride height, rougher/stiffer ride.

No impact on road feel. That is impacted by bushings and to a lesser extent, tires.