In Reply to: motorcycle tire on 8N posted by JMOR on July 23, 2018 at 08:26:31:
The original OEM N-SERIES rims were 3 x 19, the tires were the 4 x 19 single rib style, but you already knew this. You're using tubes aren't you? If not, try tubes. Strange that they give dimensions of width in metric and diameter in inch format. 19" equals 482.60mm. Is that marked anywhere? I've read of VW rims being used too. Are you ding the work or a tire dealer/shop?