I can think of at least 4 or 5 different styles of GM trim rings. many are interchangeable as long as the wheels are the same diameter (14 or 15 inch) and the backspcing on the wheels isn't that different. Trim rings for the 5 spoke 71-72 SS wheels only work with those wheels (same wheels as 70's Camaro Z28's), but the rally style and the magnum style will interchange, but they won't be correct. The GM pick-up rally style trim rings will fit passenger car wheels, but are usually moticibly bigger than the passenger car versions.
I guess now that I think about it, the 71-72 SS and Z28 trim rings would attatch to any 15" wheel, but I really don't think it would look too good, not to mention these are probably the most expensive trim rings out there.
The great thing about Chevy's what will fit one model most likely can fit something else! All I can say is if you find a set of trim rings that look good on your car and are the right price then go with them!
The chevy ralley wheels use different trim rings as well. The common 15x7 use one trim ring, and the 15x8 "corvette" rims use a deeper ring. The 15x8 rings will not fit on a 15x7 rim. The 15x7 rings will fit a 15x8 rim, but will not look very good.
Oldsmobile also had a ralley style wheel and some of them were 15x8. These rings will fit the chevy 15x8 ralley.
One more thing about the 71-72 Chevelle SS 5 spoke rims and 70-73, 77-81 Z28 rims is that the trim rings fit flush to the rim edge on the older 5 spokers. The trim rings stick out on the 77-81 Z28 5 spoke rims. This doesn't look as good as the 70-73 rims. So watch what you shop for. Take a trim ring with you when you go to buy these rims.
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