Diamond cutting is a specialist finish that is applied to alloy wheels. Instead of a painted surface, the alloy is precision cut – usually with a diamond tipped cutter (hence the name) – and then lacquered. This process creates a highly polished/shiny appearance. The downside of this type of finish is that over time the lacquer can break down and water staining/damage can occur to your alloy wheels.
You may be able to re-cut the diamond finish face, but this will run the risk of a repeat. Alternatively you can re-create the finish via paint and protect your alloy wheel and improve its appearance.
We would always recommend once a diamond cut wheel has lost it’s appearance to refurbish and move to a paint and lacquer finish. It is far more cost effective and importantly will ensure your wheels keep looking better for longer – assuming you avoid those kerbs!
It is also worth noting that diamond cut wheels can’t continually be refurbished. Depending on the wheel and importantly its thickness, you may only be able to re-cut the diamond cut surface once or twice before the structural integrity of the wheel may be put at risk.
Every time you renew a diamond cut finish you are effectively shaving away the surface of the wheel – why would you do this when you can get a very similar look, that is at less risk of water staining and degradation to the finish?