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.

In exchange for some pics, wheels are 15in, 5x4.75 with 7/16 lugs. Factory size tires would be 225/70 15.

Thanks. Would 235-75/15 fit ? Or am I limited to the 225’s? Any help is much appreciated!

Not totally sure, but they should. They would be considerably taller tire though.