Bolt pattern for a 1985 GMC Sierra Classic 1500 is 6x5.5 (That is what mine is)
6x5.5
6 x 5.5
8x6.5
six on 5.5 chipc@kovach.net
5 on 5.5"
5*5.5
The lug pattern is 5x5.5 inch.
4.52" backspacing -12mm offset 16X7 6 on 139mm bolt pattern
2wd is 5 x 127mm and 4wd is 6 x 139.7mm
The wheel bolt pattern for the 2008 Chevy Suburban 1500 4x4 is 6 x 5.5 inches or 6 x 139.7 millimeters. The stud size is 14 x 1.5, and the hub center bore is 78.3.
6x137.5