Join Date: Feb 2006
Location: San Ramon, Calif
Ferrari Life Posts: 3,627
The choice of shocks on 355's is quite limited and the OEM Bilstein's seem to do the best job.
You would be better off checking all 4 for function and having the ones repaired that do not show strength.
You can contact Bilstein in Poway, CA at 1-858-386-5900
Next best thing is spring replacements to higher values. Ferrari does not always put the correct values in for every one's taste.