My 22’ Turbine wheels have already been refurbished and need doing again due to damage, the dealer says they can’t as this will leave minimal rim. They recommended I powder coat them to full black. Has anyone has this done? L405 S/C Autobiog

Irrespective of the wheel type, as you cannot have them diamond finished again, you have two choices:

1. Paint and clear lacquer over the top
2. Powder coat

Powder coat is viewed as more hard wearing initially. However, this is a topic of debate. Powder coat never actually adheres to the surface of the wheel, unlike paint. Instead, it just covers it. This means that the slightest of nick or chip through replacing tyres, stones or kerb damage, will mean that the powder coat surface is comprised. Once the surface has compromised, water can make it's way behind the powder coat and it will start blowing up and peeling off.

That said, I've had powder coated wheels previously and have experienced no problems, probably due to keeping them in pristine condition. Knowing what I know now though, I would always opt for a painted finish with a clear 2k lacquer over the top.

Note that wheel manufacturers never powder coat and always use a combination of paint and lacquer, except for diamond turned wheels of course!

Note that the silver used on Land Rover vehicles is 'Sparkle Silver' with paint code NMH if you decide to go that route.

Hope this helps  Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

I have just done exactly this.
Diamond coat all scabby.

I’ve ran powder coated wheels for years and never had an issue.

Powder coating is the way to go, saying it doesn't adhere to the surface is wrong. A demo i have seen may times is with a painted piece of steel and a powder coated one, both are hit with the ball of hammer very hard to create a big indentation. The painted plate, the paint cracks off, the powder coated one apart from the dent is fine. BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6