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Old 04-01-2018, 03:58 PM
Ziggy Ziggy is offline
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Default 1976 Grand Prix

Just inherited a 1976 Grand Prix. Since I’m not close to where it is stored and I need to get tires on it for transport, can someone give me some input on the Ralley wheel size and lug spacing (5 or 4.75) the lug nut size (7/16 or 1/2)and would a 225x75 or 235x75 tires fit?

Much appreciated and thanks in advance.

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Old 04-01-2018, 04:39 PM
GNvsTA GNvsTA is offline
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In exchange for some pics, wheels are 15in, 5x4.75 with 7/16 lugs. Factory size tires would be 225/70 15.

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78 Firebird Formula-Cameo white
98 Trans Am-Arctic white
77 Grand Prix SJ-Brentwood brown met
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Old 04-20-2018, 03:58 PM
Ziggy Ziggy is offline
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Thanks. Would 235-75/15 fit ? Or am I limited to the 225’s? Any help is much appreciated!

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Old 04-24-2018, 02:57 PM
GNvsTA GNvsTA is offline
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Not totally sure, but they should. They would be considerably taller tire though.

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78 Firebird Formula-Cameo white
98 Trans Am-Arctic white
77 Grand Prix SJ-Brentwood brown met
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