In researching the procurement of replacement wheel rims for my '73 Hi-Rider, some info I'm finding refers to Dunlop rims or Dunlop type rims. Some replacements indicate their rims are rolled as the original Dunlop rims were. I take this to mean that Dunlop, apparently back in the 60s, were also producing wheel rims. Can others weigh in on this to verify, or not, if Dunlop was the original producers of the wheel rims for Noton. Or were they possibly just one of several suppliers to Norton.