For what it's worth ....

When I bought my '85 the wheel covers looked really grody and had some deep
scratches.  I used some ordinary paint remover which is supposed to eat
plastic but didn't harm them at all.  I then smoothed them up with wet or
dry sandpaper, filled the scratches with automotive glazing putty, primed
them with automotive primer in a spray can .... wet sanded some more, filled
again where necessary, etc.  Then sprayed them with silver/gray.  They came
out looking brand new.

When you get your replacement, it's not all that hard to make them all look
the same ... and good at the same time.

Mike
'84 GL 7 pass
'85 GL Westy