M030 ROW spring rates vs various aftermarket options

[Topless]

Originally Posted by brp987

"Tolerable" is subjective. Is there anyone out there who has gone from stock to Eibach, or from Eibach to ROW M030 who can describe the difference?

Of course. Any description will be subjective from the perspective of the driver unless a car has been tested in the Penske suspension lab or a similar technical analysis is done.

Here is my own subjective observations while instructing in other peoples cars. My interest is focused on ride quality, performance and handling and I don't really care about car show quality fender well gaps etc.:

1. Eibach lowering springs- Too low and introduced alignment and bump-steer issues. Difficult to get right.

2. M030 ROW- These cars always feel good with a balance of street driveability and better front grip/easy rotation for performance driving. The ride is firm but still good.

3. PSS9s- Very dependent on setup. I have been in cars with well sorted PSS9 suspension that felt great and cars (usually owner installed) that were scary, unpredictable and awful. I don't recommend a DIY install. Set to full soft for street use and the ride is very good.

I hope you find this useful.