Does anybody know of a 150/90/16 motorcycle tire?
I don't think anyone makes a 90 series anymore. I looked as well and it seems everything today is 150/80/16. At one time Michilen or Metzler (can't remember which M company it was) made one and there's the possibility someone has and old stock new tire of that size.
here is a a website of an explanation of tire measurements.
150/80-16 is the closest I could find.
kn, they last literally forever.