Gents
I've done a bit of research on this and my original thought had been that the last three digit chassis codes must correspond in some way to the actual build numbers (and according to a rumor I heard of someone approaching somebody in Germany about this), but unfortunately it seems what BMW did was assign the chassis code according to the "country" the cars were destined for (i.e. if 10 arrived in your Country, then BMW simply assigned JX98X01 to JX98X10 to the cars randomly (X denoting another number or letter, in CSLs either JBXXXXX or JCXXXXX - I do believe all RHD models had JC rather than JB as these were made after the full production LHD were completed).
A good illlustration of this are all the NZ new CSLs:
Mine was the first to arrive in the Country and has been given JC98237, yes another vehicle which arrived later than mine also in Silver grey had JC98234 - but all the silver grey cars were given consecutive chassis codes (i.e. from JC9823X to JC9823X).
All the Black CSLs in the country - a grand total of 2 had JC98219 and JC98220, yet one arrived in November 2003 and another in January 2004.
So I guess the best we can actually come up with is to utilise the build date rather than chassis codes.
Otherwise pretty cool idea.
I've done a bit of research on this and my original thought had been that the last three digit chassis codes must correspond in some way to the actual build numbers (and according to a rumor I heard of someone approaching somebody in Germany about this), but unfortunately it seems what BMW did was assign the chassis code according to the "country" the cars were destined for (i.e. if 10 arrived in your Country, then BMW simply assigned JX98X01 to JX98X10 to the cars randomly (X denoting another number or letter, in CSLs either JBXXXXX or JCXXXXX - I do believe all RHD models had JC rather than JB as these were made after the full production LHD were completed).
A good illlustration of this are all the NZ new CSLs:
Mine was the first to arrive in the Country and has been given JC98237, yes another vehicle which arrived later than mine also in Silver grey had JC98234 - but all the silver grey cars were given consecutive chassis codes (i.e. from JC9823X to JC9823X).
All the Black CSLs in the country - a grand total of 2 had JC98219 and JC98220, yet one arrived in November 2003 and another in January 2004.
So I guess the best we can actually come up with is to utilise the build date rather than chassis codes.
Otherwise pretty cool idea.
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