I'm not sure about E28... but I think it dosen't fit. What I know, is that E30 dosen't fit because of it's steering/key lock system and I've heard that E28 & E30's fit each other.... So, "logically" I don't think E28 fit E23's of 9/1985 and later... but again, this is only my WAG...
All that been said, I didn't have that knowledge like 6 years ago when I fit a coarse wheel on my 1986 (735i) ...

I never did, noticed any thing "wrong" with it & drove it around like 2 years with that wheel on.

Then I bought my 1982 (745i) and decided to fit that wheel on it ... then I noticed that wheel surprisingly "fell down" along steering columne splines just by itself... so easy it has to fit when splines're right

On my 1986 I had to push it down a bit... oh nothing savage (otherwise I'd stoped!!), just it needed to be pushed in, gently...
Regards,
45er