Very happy for you they worked it through with you.
Now on to Ceramic / Wax wheels.
- Marc is right: Ceramic coating (wheel, car, windows, etc.) should be applied on 100% clean/virgin paint only. Be it an old OR NEW car, the same prep work is involved. You wouldn't believe how already heavily contaminated & weathered new cars paint can be... On older cars/wheels, same mindset of a proper decontamination wash, iron removers, claybars & I would add, to be 100% certain any old coating or wax is removed to finish with a polishing step (how aggressive depends on the paint's state & the results chased. not all cars are show cars).
- A ceramic coating bottle that is already opened (the glass bottles) usually only have a shelf life of 6months to a year, depending on the coating's manufacturer's recommendations. If using an already opened vial, try to remember how long it sat unused.
- Ceramic coatings made for wheels typically only have a life expectancy of 1 year max, all makes spoken for. A ceramic coating manufactured for the car's paint can also be used on the wheels, but do not think it'll last the claimed 2, 3, 7 or 9 years from the normal application on paint. High heat from the brakes is what will kill it. Still expect at MOST a year.
- A coat or two of your wax of choice on your wheel will serve you probably a whole season. Most waxes on the market now have a life expectancy around 6 months now (lower with the high temps from the brakes here as well).
- An alternative to waxes & ceramic coatings or something that can be easily used as a topper is a spray on wax/sealant or the spray on hose of sealants. It is super easy and works wonders.
Happy jewelling of your wheels!!
(And sorry for the long post).