Spring pads 9mm or 3mm?

[noid]

I need to order new spring pads for the front, looking at Realoem/bmwfans there are two options for the upper pad. 9mm and 3mm are the options, which do I need?

The special note for the for the 9mm is "Only applies to coil spring red ". What does that even mean?

My e30 came with M-tech suspension from the factory (bilstein HD's). I am using the stock springs and just changing out the shocks with new HD's.

[jlevie]

Ether can be used, but your car probably has 3mm pads on it now. The 9mm pad is for the M-tech suspension that has slightly shorter springs.