Weird lines on Mavic 217 SUP rims

[JRGSXR]

If you have access to, or can get your hands on a dye penetrant kit. It will give you the definitive answer. Won’t damage the rims or finish either. Only takes 15-20 mins to do.

 

[Woz]

These are definately cracks. Those rims are prone to cracking, especially near the eyelets. I have one NOS rim with exactly the same issue.

- errrrr. Like how is that possible? Surely a NOS rim is in a state of no / hardly any stresses?

Is it like damage from the environmental or a gross design / manufacturing fault.

I'm not sure they are cracks. They look far too precise. I suspect shop wear / storage marks from ceiling hooks / roof racks / wall racks.

The valve hole shows corrosion though.