[scld1354]

Did the 77-81 Bonnevilles have the 5x5 bolt pattern or were they the smaller 5x4.75 pattern?

Thanks in advance!

[srmmmm]

5 X 4.75"

Wheels from my 1970 Firebird fit on my 1981 Bonneville when I needed a spare in a pinch.

[scld1354]

Thanks for the quick reply!

[rjpaige3]

They had both, depending on the installed engine. Anything smaller than 350 got 11" front discs, a 7.5" rear and 5x4.75 pattern. 350's and up got 12" front discs, 8.5" rear and 5x5. Not quite sure about wagons, they might have always had 5x5.

[Truelygr8]

Does anyone know the exact WW size of the 78-81 A body GP? I bought an all original 81 and the tires are the only thing not original. I remember when I was 14 we had two 78’s and an 80 new. They all had the larger WW as standerd equipment. Is it 1.18” ? Does anyone know exactly, no guessing, I’m ordering new tires but they must be exact. Thank you in advance. This was one of ours new in the winter of 77.