I do not see a pattern - seems like there different suppliers or different molds and the parts were used interchangeably. Interesting that there are not many smooth wheels out there...

I am not sure if I got everyone and a couple I had to put a question mark, because they didn't give enough info if the car had the Z23 option or not. Maybe they can update the info when they see there cars build date with a ? by it.

Smooth:

11B Z23 RS/SS

11D no Base convertible

02B ? SS convertible

03D ? Z/28

04A Z87 RS

04A Z87 RS

05C no Z28

08C Z23

09C no X44base coupe

Pebble:

09D Z87 RS/SS

10C Z23 Z/28

10D Z23 Z/28

11A no Base convertible

11D Z87 SS

12C Z23 Z/28

01C Z23 SS

01D no Z/28

02B Z23 RS

02D Z23 X11

02D Z23 SS

03D Z23 RS/Z/28

03E no base coupe

04B Z23 RS/Z/28

04C Z87 Z11

04C no Z/28

04C Z23 RS/Z/28

05A ? RS/Z/28

05A Z87 base coupe

05A Z87 Z10

05E Z23 X11

06A Z23 (no handle?) convertible

06A Z87 SS

07A Z23 Z/28

08C Z23 Z/28

09A no ?

09B Z23 Z/28

09D no X66

10A no Z/28

Smooth:

11B Z23 RS/SS

11D no Base convertible

02B ? SS convertible

03D ? Z/28

04A Z87 RS

04A Z87 RS

05C no Z28

08C Z23

09C no X44base coupe

Pebble:

09D Z87 RS/SS

10C Z23 Z/28

10D Z23 Z/28

11A no Base convertible

11D Z87 SS

12C Z23 Z/28

01C Z23 SS

01D no Z/28

02B Z23 RS

02D Z23 X11

02D Z23 SS

03D Z23 RS/Z/28

03E no base coupe

04B Z23 RS/Z/28

04C Z87 Z11

04C no Z/28

04C Z23 RS/Z/28

05A ? RS/Z/28

05A Z87 base coupe

05A Z87 Z10

05E Z23 X11

06A Z23 (no handle?) convertible

06A Z87 SS

07A Z23 Z/28

08C Z23 Z/28

09A no ?

09B Z23 Z/28

09D no X66

10A no Z/28