Originally Posted by uhaulball
so r u saying zsp e90's dont need to change shock if they use HR sport springs cuz they are already tuned for low suspension? or are u saying non zsp needs it more than zsp, but zsp still needs em. basically, in a sentence, what parts do i need to drop my stock 330xi w/o zsp. thx
Okay......If your car HAS ZSP, it already
comes with different ZSP shocks to go with the ZSP lower springs. If you have ZSP and want to lower it AGAIN, then you should change out the ZSP shocks for aftermarket shocks to go with the new springs.
If your car does not have ZSP and you want to lower it, you should change out the your NON-ZSP shocks for aftermarket shocks to go with the new springs.
Anytime you change the springs, you should change the shocks, regardless if you have ZSP or not.
Another words, you need new springs and shocks to lower your non ZSP xi.