Mine are from an 80's something Blazer.They fit fine.
Is this the type of rims your talking about?
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"71"blazer,rust free(bought in Arizona),350SBC
(375HP),700R4,factory G.M. TPI.Living in Santa Barbara,California.Ongoing project.
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71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension.
Petrolia,Ontario,Canada but working in Port Huron,MI.
See ALL my Blazer pic's
HERE