Having problems with your Ferrari 612 Scaglietti ?

Hi the tyre pressure inmy right hand front wheel keeps going down. the tyre does not have a puncture and the shop is telling me that my wheels are ver badly corroded (2005 612 Scaglietti) and the the galvanis corrossion on the wheels is affecting the seal on the TPMS unit. They tell me I need to get my alloy wheels refurbished. n fairness the polished rim is very cracked and I can see some cracking of the clear coat on the inside of the rim aswell. Any advice? I live in Ireland.

Posted / edited by AnonymousUser on : 22-01-2018

Answers :

Hi Barry.

They are correct. Alloy wheels corrosion causes loss of tyre pressure. Unless the wheel alloy structure is properly cracked, they are also correct in suggesting refurbishment rather than replacement. If the cracks are only interesting the coat (even that on the inside of the rim), refurbishment should fix the problem.

To make it clear, refurbishment is done in the following way:

\015\012
    \015\012
  1. The wheels are first dipped in a corrosive solution that will remove entirely the original coating.
  2. \015\012
  3. Each wheels get shot blasted to remove further imperfections (like the ones that you see on the inside of the rim).
  4. \015\012
  5. If there are more marks and imperfections, they get machined and removed.
  6. \015\012
  7. The wheels get powder-coated and lacquered.
  8. \015\012
  9. The wheels are finally baked in oven to harden overall coating.
  10. \015\012
  11. Tyres and valves get fitted
  12. \015\012
  13. Wheels are refitted into the car.
As an example, below pictures taken from the web page of one of the many refurbishment centres. Here original website for credit.

Before:
\015\012
\015\012ginko_73.jpg
\015\012
\015\012After:
\015\012
\015\012ginko_72.jpg


The process costs between \302\243120 and \302\243300 per wheel ( I am in UK). The price depends on size and state of the wheels. Your Ferrari has probably 18 or 19 inches wheels, do not expect a minimum price. The price will still be far less than what you would pay for a new set of alloy wheels.

Regards

Ginko
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