New style center cap

[bucket]

The caps in the first post are for steel wheels, while the ones Craig posted are for aluminum wheels. I went and looked at my aluminum wheels, they too have the caps with the thin little bulge around the lugs.

 

[bucket]

For some reason my picture won't post.

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Aha! There it is.

 

[CORVAIRWILD]

I'm looking at another thread on this forum, and the difference is the outer circumference of the cap has a slight bulge around the plastic nut, but I'm not able to decipher which one fits which wheel because the text is vague

 

[CORVAIRWILD]

http://www.gmsquarebody.com/threads/new-style-center-cap.19901/

 

[Craig 85]

I'll try to clarify my earlier post. In post #17 you will see the correct cap for the oem alloy wheel. The outer edge of the cap has bulges around the black lug caps. Around 2004, I changed the factory chrome clad steel wheels to the oem alloys. I wanted to reuse the center caps from the steel wheels on my alloy wheels. I found they did not fit on the alloy wheels due to the outer circumference of the (steel style) center cap not fitting into the recessed part of the alloy wheel. The alloy wheel is curved at the arrow. The steel wheel has more flat area around the lugs than the alloys. The simulated lugs are in the same location on both caps, just the circumference is different.

There is one more variable I don't know the answer to as I no longer have a truck with these caps. There are 3-4 raised tabs on the back side of the cap (at least on the alloy style) that raise the cap slightly off the wheel. I don't know if the steel style cap has these. I would assume you can use the cap with the bulges around the perimeter on either wheel.

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