Wheel offsets for RA23

[RXFURY]

Hello.
I have a friends RA23 that i am helping him with.
It has a boosted and intercooled 1GGZE and a few other mods.

The deal is he wants to go for the semi Japanese look of big wheels. guard mirrors and flares.

I think it will look kind of tough.

The issue I have is wheel off sets to fill the flares. I was thinking 17 x 7.5 +12 front and 17 X 8.5 +4 rear or should I stick to that size and + 20's all round?

Does anyone have any idea what offsets to run to get the right look and stance?

[ctrain]

if you want to fill out the flared you'll have to get wheels with a negitive offset, check SSR rims, Impul, BBS, Simmons rims.

[o_man_ra23]

It depends how big the flares are. Standard rims are around the +20 offset. The way I would do it is this:
1. take a stockish wheel with known width and offset (can be measured reasonably easily) and place it on the appropriate end (front/rear).
2. measure the distance available on the inside, and distance available on the outside
3. new offset to fill guards would be (current offset less (distance avail on outside less safety gap (say 10mm))). This is assuming you have measured with the same width tyre. If not, then you need to increase the offset by half the width difference between the old tyre and new (assuming new tyre is wider).

So for example:
Take a +20 wheel with 195 wide tyre and you measure a gap of 40mm, and you want a safety margin of 10mm. The new tyres desired are 215 wide. So the new offset would be:
20 - (40 - 10 - ((215-195)/2)) = 0 offset. Of course, under the same scenario if the measured gap was 60mm, you would now need -20 rims.

Hope this is clear enough??