I have found what appears to be a crack running along the inside of my wheel. There is no damage to the sides (braking surface), the edges of the rim (metal meets rubber), or the other side of the surface (where the spokes thread in).
Is this something that use/abuse has caused? Is this something that must be fixed immediately? Is this even a structural "crack" rather than a scratch or surface blemish from tire tools?
I tried searching the forums and google but the threads I found discussed cracks along the braking surface and when the spokes are pulling away from the wheel. I can seem to figure out the proper search terms for my specific issue. Thank you.