E30 factory options, what do these options mean?

[SickFinga]

I HAD the window sticker off my 88is, and it had info for the sport suspension, but that car is gone, and I left the all the info when the car was purchased new in the glove box, stupid me,

What exactly do you want to know about the M Technic suspension?

It came with sport gas shocks, progressive springs and thicker anti-roll bars front and rear.

[noid]

What exactly do you want to know about the M Technic suspension?

It came with sport gas shocks, progressive springs and thicker anti-roll bars front and rear.

I actually tried to find a part number or details regarding any spring other then the traditional sport IS spring, and no one had any record of such a part number (even BMW Germany).

What is interesting is that what is considered sport in USA has the same part number for m-tech in europe:
Europe:

http://www.realoem.com/bmw/enUS/showparts?id=1111-EUR-04-1987-E30-BMW-325i&diagId=31_0093

NA:

http://www.realoem.com/bmw/enUS/showparts?id=1113-USA-01-1987-E30-BMW-325i&diagId=31_0099

What is also interesting is that were were "Hot climate springs" and "Sweden" springs:

http://www.realoem.com/bmw/enUS/showparts?id=1111-EUR-04-1987-E30-BMW-325i&diagId=31_0098

http://www.realoem.com/bmw/enUS/showparts?id=1111-EUR-04-1987-E30-BMW-325i&diagId=31_0093

[SickFinga]

For MY1987 325is used M Technic sport suspension, option S704A. From MY1988 BMW switched to Sport suspension, option S226A. That means that something was changed in the suspension package. I don't know exactly what, but it looks like the springs remained unchanged. Most likely newer 325is uses different shocks, but I did not look into it. No other country uses S226A suspension on E30s so it's hard to pinpoint what exactly was changed. ETK also is not a good source. It has mistakes and parts get superseded with different parts.

What is also interesting is that were were "Hot climate springs" and "Sweden" springs:

Hot Climate version uses a bigger radiator, so it is understandable that a different spring is used. Why Sweden would have it's own spring, I have no idea.

[steve68]

I'm pretty sure the rear trailing arms were changed a couple of degrees, for the 88 model year,

[SickFinga]

I'm pretty sure the rear trailing arms were changed a couple of degrees, for the 88 model year,

I don't think it matters really. S704A option remained in other markets on 325i. S704A includes springs, shocks and anti-roll bars. So that means one or two of those components are different.