FCAB's: Centered Vs. Non-Centered. Whats the diff?

[WRXEATR]

I'm looking into replacing all bushings that are wishbone related, and I just came across some FCAB's that had holes in the center, and others with the hole offset from center. What's the difference? Is it just a change that was made from '96, and up? They would be for a '97 Coupe.

TIA

[WRXEATR]

bump

[M3Alpine99]

95 and older e36 use them(as well as e30) to add caster.

The 96 and later use a center'd bushing because that caster that the offset bushing provides in already built into the suspension geometry.

Use a centered on the later model. You can have too much caster, you will see the late model M3's with their front tire almost touching the bumper...

[328iJunkie]

How much caster does this bushing add? 1deg? 2?

[WRXEATR]

95 and older e36 use them(as well as e30) to add caster.

The 96 and later use a center'd bushing because that caster that the offset bushing provides in already built into the suspension geometry.

Use a centered on the later model. You can have too much caster, you will see the late model M3's with their front tire almost touching the bumper...
:thanks::urtheman