Nomenclature for tyres

Nomenclature: width_(mm) / profile_as_%age_of_width x rim_diameter_(mm) [optional qualifier]

Please note that this dimensions has to be in mm!

This text needs to be extended with some information about measurepoints for the dimension.
Original LUGNET discussion is at http://news.lugnet.com/cad/?n=13760

Examples:
50951.dat - Tyre  6/ 30 x 11
87697.dat - Tyre 12/ 40 x 11 Wide with Center Band
u9131.dat - Tyre  7.2/ 45 x 8.8
--Mikeheide 10:11, 10 July 2011 (EDT)