Tman, while the tires may work at 60 mph -- the inspectors want written proof - usually a verified speed rating from the manufacturer. Glen's got the right advice, though -- if you don't/can't get the mfr. data -- talk with the motorcycle tech folks to get some input from them. We've been in touch with Van Butler on this bike tire issue.
You were talking about a kid a bicycle and did not mention passing any tech

My answer was based off those criteria
