My Donohue after a bit of a revamp, still needs a bit of work. The paint was fucked after being used for work in any weather and being locked and unlocked repeatedly all day. I got the rust off using wire wool then clearcoated the bare steel.
It's just grime, not sure how it's ended up in that pattern though! Maybe where wet stuff has slid down the spokes onto the rim? (Disclaimer: not actual science)
My Donohue after a bit of a revamp, still needs a bit of work. The paint was fucked after being used for work in any weather and being locked and unlocked repeatedly all day. I got the rust off using wire wool then clearcoated the bare steel.