* 6x139.7mm (6x5.5 inches): This is the most common bolt pattern for a 2006 Silverado.
* 8x165.1mm (8x6.5 inches): Less common, this is typically found on heavy-duty Silverado models, specifically those with 8-lug wheels.
To be certain, check the sticker on your driver's side doorjamb. This sticker lists the tire size and other vehicle specifications, and it will almost certainly specify the bolt pattern. Alternatively, you can look at the wheels themselves – the number of lug nuts and the diameter of the bolt circle are clearly visible.
