Spacer Size? 30mm Z32 calipers + S13 SE wheels?

[zooopreme]

I wasn't sure where to ask

...but here, I need to know what kind of spacers I will need to fit my 30mm calipers with my SE wheels (will provide picture on the bottom). Would I need spacers for the rear calipers as well?

I've searched and I found a VERY old thread on Fresh Alloy that didn't help me out.

Here's the picture of the SE wheels:

[allenms240]

You'll need at least 7mm spacers in the front. Not sure about the back.
I I got some 30mm calipers up front and needed the spacers. I would recommend bolt on spacers though, get some 25-30mm ones that bolt onto the hub, they're safer than the bolt on ones.

[zooopreme]

First: Thank you for replying after many views! I was going to bump it later tonight if nobody really answered.

Second: What's wrong with a 15mm? Isn't 25-30mm kind of overdoing it?

[allenms240]

Size is a matter f perspective. I like my wheels to be flush with the chassis, so I got the 20mm up front, 25mm in the back.
The only problem is the oem studs are a little too long, so you'll have to cut them shorter, I used a grinder to do this.