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ohfuzz

Tire size

Question

What is the factory tire size of my 77 grand prix

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Depending on your option package for your car, it was one of two sizes:

G78-15

GR70-15

Again, depending on the option package, the wheels of a 77 Grand Prix came in one of two sizes as well:

15" x 6"

15" x 7"

 

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