at this point just something to be used in dirt that is a 507 size AND 1.5" or less in width
Here's the problem, and I'm going to be clear about this: I'm going over the ISO lists of available tire sizes, and
that kind of tire isn't listed. The thinnest a retail 507mm tire can get is 1.5."
They don't come any thinner than that.
This is why headloss and I are wondering where Kona is getting their tires.