Is powdercoating the ONLY option?

atx370z

Question: The guy at the place I went to said he could do my wheels in the color I wanted which I guess is a "chrome" color... Similar to the OEM silver on the Sport wheels. He then said that after time it would darken from sun exposure. My car is never in the sun for long periods of time and spends most of its time in the garage. Is what he saying true? If so, how much sun exposure would they need before the powdercoat started to change? I'm half tempted to take them back and tell him just to do it. He also mentioned some sort of UV coating that could be applied after, but said it won't help much.

The whole time I was there, it's like he was trying to talk me out of his business. However, a few people have recommended his shop for wheel powdercoating.

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Berk HFC & CBE, Stillen G3's, AMS Crank Pulley, JWT Flywheel,
4.08 Gears, UpRev, H&R Springs and 20mm Spacers, JDM
Rear Fog, EVO-R Front Lip and CF Upper Cover, 305's