The bolt pattern of a Pontiac G6 is 5 x 4.33 inches. These numbers mean there are five lugs with a bolt circle of 4.33 inches. The Pontiac G6 was sold from 2005 to 2010, and all model years have the same bolt pattern.
The bolt circle is determined by drawing a circle that passes through the center of each bolt. The diameter of this circle is measured, and that number is the bolt circle. Wheels from other models of Pontiac vehicles do not fit the G6 since each model has a different bolt pattern. However, wheel adapters may be attached to convert one bolt pattern to another.