Whitening Yellowed wheels

[Origineelreclamebord]

Hi guys,

Like many people I tend to re-use my wheels. I boil them off and it works a treat for me, except...

...When boiling off ProLine tires, the wheels (nylon) become yellow/beige like, it just looks horrid! I can't get it off with regular cleaning materials (soap, detergents, etc), it seems the tires and boiling have an effect like dye.

So I was wondering... Has anyone got suggestions to solve this issue? Or even better, proven methods?