Voici ce que j'avais un jour relevé sur le site AlfaBB au sujet des jantes de 105.
" Best approach for 105 wheels.
The paint is called BMW Polaris Silver, Glasurit code #057, and was used for BMW motorcycles about 1970-71. I understand this paint is no longer available.
Fortunately, there is another, very close match called "New Polaris" and "Imola Polaris Silver", Glasurit code #060, that was also used on BMW 1602 - 2002 Tii cars and is still available from Glasurit, see http://www.glasurit.com/COLOR/COLOR-Search/mfrlist.html and search for "polaris".
I read somewhere that Ford "Silver Fox" used on European Capri models at about the same time (1970s) is supposedly a good match, too, but I never found any information about this paint. "
Je ne sais pas si c'est la même couleur pour les GTV.
Hope this helps.