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The manufacturer states that the 2011 GMC Sierra wheel bolt model has a standard offset of 6 lugs with a spacing of 5.5 inches or 139.7 mm. Bolt patterns are specified by two numbers for each vehicle. The first number indicates the number of bolts on the wheel, which is 6 in this case. The second number represents the diameter of the circle formed by the bolt configuration, which measures 139.7mm in this truck. These measurements can be expressed in inches for the US metric system or in millimeters for European or international vehicles. Knowing these values is crucial when purchasing new truck rims to ensure they match the correct bolt pattern for installation on the truck's lug studs. Having more lugs/bolts on the axle enhances tire stability and allows for greater load capacity.
The wheel bolt configuration on a 2011 GMC Sierra 1500 is 6 bolts, each spaced 139.7 millimeters apart.