Ya, Rays has very stringent manufacturing and QA process. Their JWL+ R certification process is 2 times more stringent compared to the JWL certification (commonly regarded as the highest level of wheel certification). Here's some writeup on Rays wheels:
"RAYS Original Forging Technology: RM8000
RAYS, through constant research and development paired with experience gained through aggressive motorsports involvement, learned that wheels best suited for racing conditions are forged wheels. But not conventionally forged wheels manufactured through machining a pressed billet into a wheel shape. RAYS took forging to the next level and improved upon the basic forging technique to offer wheels that test the limits of wheel manufacturing.
The process has awarded RAYS first place finishes in IMSA GTP, Formula 3, 24 Hours at Le Mans and GT (Grand Touring) Car series, as well as numerous other wins on the track. This performance and engineering success is the backbone to their success on the street, too.
RAYS independently designed and patented the RM Forging process and developed its own machines to achieve a wheel that exhibits a perfect metal flow without cut-offs or loss in structural integrity. Completely designed and manufactured in-house, an RM forged wheel is first pressed utilizing millions of pounds under a mold to achieve its basic shape. Then RAYS applies the RM technique, a process that presses a wheel from the top, bottom, and sides at one time in a high speed spinning process, to extrude the shape into its final form requiring minimal additional machining.
Throughout the manufacturing and forging processes, Rays Master Piece wheels are subject not only to Japan's JWL standards for alloy wheels, but to RAYS' own JWL + R standards - standards set that go above and beyond what is required by JWL to meet RAYS' higher standards for quality, consistency and fine-tuned design.
JWL +R standards subject RAYS wheels to tests two times more severe than JWL requirements. For example, RAYS testing machines drop a one-ton weight at a 90-degree angle on a wheel/tire assembly to test strength and stability. Other tests ensure the highest levels of endurance, rigidity and even finish quality are maintained - extra steps necessary as big, yet lightweight wheels with low profile tires are increasingly used on today's luxury and sport vehicles."
The Volk Progressiv ME's can be bought from Singapore. 19' Including tyres should set you back around Rm15k, which is cheap compared to LM-R's or HRE or even Neez wheels.
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