[mjc]

Interesting thread, I run a set of 15" Heli Spokes with Winters between November and March and I too noticed how dirty the Heli Spokes were when I removed them earlier in the year (I didn't have time to clean and protect them before fitting last year).

I removed 90% of the dirt/dust before storing them in March, planning on giving them a full cleanse, polish and wax (Auto Finesse Mint Rims) before refitting them next month.