If its a fresh paint job, really no need for iron x. I would just use a mild paint cleaner to remove whatever the dealership put on, then a high quality sealant. ( I like Sonax PNS)
Yeah, try using an apc. Amazing roll off will not allow the coating to bond properly.
Just make sure to clean the tire until it no longer shows brown foam.
I got mine from a seller in the states. It is an absolutely brilliant product for the money.. a complete game changer.
Best way to describe it is Sonax PNS in a paste wax form.