Needed to switch the wheels around today as there was 1mm less tread on the fronts. So to make it worthwhile, wheels washed, de-tarred, IronX applied, barrels clayed, a possibly pointless polish given how much effort I put in and a coat of Gtechniq C2v3 to seal them. I think they came up pretty good. I was a bit surprised as to how little pink staining there was from the IronX on the front faces but anyway, done now. Will need to do the rest of the car once I've recovered