Better turn-in for E30

[alexbaby88]

The eyeball arms work with any suspension configuration.

Hi, do you know how much the NVH detriorates with these eyeball arms? Do you reckon they are suitable for street use? or would it be too noisy.

[Jordan]

I have them on my car. Got ~15k mi on them.

Daily driver...

[1991 318is]

More caster helps turn-in.

The added caster helps turn in due to the nature of the newer design radials. Newer means newer than when an E30 was new. Newer radials require more caster due to utilizing a greater slip angle. Slip angle is designed into the tire. An easy way to visualize it is to imagine the tire contact patch not rotating about the steering axis as much as the wheel. The soft sidewalls reduce rotational resistance and increase fuel economy. Putting the CAB's in backwards is the worst of both worlds. Design of a clean sheet suspension begins with the contact patch, tread width, and slip angle.

[cthulu703]

The added caster helps turn in due to the nature of the newer design radials. Newer means newer than when an E30 was new. Newer radials require more caster due to utilizing a greater slip angle. Slip angle is designed into the tire. An easy way to visualize it is to imagine the tire contact patch not rotating about the steering axis as much as the wheel. The soft sidewalls reduce rotational resistance and increase fuel economy. Putting the CAB's in backwards is the worst of both worlds. Design of a clean sheet suspension begins with the contact patch, tread width, and slip angle.

What does this have to do with the subject of how camber effects turn-in?

[1991 318is]

What does this have to do, etc.

Nothing as regards camber. There are a number of posts on the first page of this thread regarding the orientation of the offset control arm bushing, its effect on caster, and the effect of caster on straight line stability and turn-in. I read the entire thread for the first time yesterday and responded to that earlier aspect. My point was that more caster helped turn-in on an E30. I realize that later the posts became more concerned with camber's effect on turn-in and adjustment plates. The thread is titled "Better turn-in for E30." Sorry for any confusion that may have caused.