I have had two different sets of Riken wheels on different Corvettes. This symbol was on both of those sets and I thought it was a brand mark. Then I noticed them on the stock 87 wheels that I used to own. These were manufactured by a company called Enkei (info and pic come from www.c4guru.com). Then somewhere I read that this symbol is a casting mark from the foundry to designate which alloy of aluminum was used.
Anyone got the answer?

 

Riken is aftermarket correct? Perhaps Enkei does their castings.

 

I thought I saw that mark on Damien in The Omen.

 

I always thought that mark was the symbol of a Japanese Casting Standard, which one I have no idea.
Sort of like our SAE, or ASTM Standards.
I have absolutely nothing to back this up, however!

Larry
code5coupe

 

JIL,but I don't remember what it means.

 

This might help:




Japanese Wheel Standards and Regulations for the Aftermarket

The following information is a basic explanation of wheel testing and marking requirements for the Japanese after market. The JWL and VIA marks are required for all wheels being manufactured for the Japanese market. It is possible to sell wheels with only the JWL, but JAWA has been pressuring retail chains and shops to only carry products that have both marks/testing.

JAWA Japan Light Alloy Wheel Association
JAWA (Japan Light Alloy Wheel Association), is an organization made up of various wheel companies, and carries out research and technical studies concerning the manufacture, marketing and distribution of automotive light alloy wheels. These activities also include market and technical research aimed at developing new demand for industry products plus many other related activities. To achieve these objectives, JAWA aims to improve the quality of the Automobile Light Alloy Wheel and promotes liability of our product in the Automotive Aftermarket.

JWL Mark
Japan Light Alloy Wheel (JWL) Standard for Passenger Cars. The Ministry of Land, Infrastructure, and Transport requires that aluminum wheels for passenger cars (with 3, 5, and 7-number plates) sold in Japan bear the JWL mark. The JWL mark can be displayed on wheels that have passed the standard through a self-certification system.

JWL-T Mark
Similarly, the ministry requires aluminum wheels for trucks and buses (with 1 and 4-number plates) to bear the JWL-T mark. Even if a vehicle is classified as a passenger car (with 3, 5, or 7-number plates), if it comes with LT tires as standard equipment due to its GVW (gross vehicle weight), it must use aluminum wheels bearing the JWL-T mark.

VIA Mark
A third-party entity called the Vehicle Inspection Association verifies whether a product meets the requirements prescribed by the JWL or JWL-T standard. This association permits a product to bear a VIA mark if it passes rigorous quality and strength verification tests conducted in accordance with the JWL or JWL-T standard.

 

there you go, we all knew they were Japanese wheels, better than the C6 wheels which are made in China.

 

Once again I'm wrong..........dammit

 

Looks like C4 guru pirated someone elses's bad information.

Busted Bogus.

 

 

Now we know. Thanks, rspreng86.

Larry
code5coupe

 

Cool. If it's C4 related then someone here has done it or knows how to do it. In fact, a couple of years ago a forum member from Oklahoma even told us the proper way for a guy and gal to successfully insert Tab A into Slot B inside a C4. without incurring injury.