What's the 2004 Chevy Silverado 1500 wheel bolt pattern?

The wheel bolt pattern is listed by the factory specs aS6 lugS5.5 inches or 139.7mm medium offset for the 2004 Chevy Silverado 1500. There are many different bolt patterns that exist and they are used on different size vehicles which will vary froM4x100 for the economy class vehicles and up to 8 X180mm for the larger trucks. The reason for this is that it allows You to have more clamping power holding the wheel onto the vehicle. It also allows You to distribute the load of a wider area and allows You to have a bigger hub and bearings. When deterMINIng which size You need it is imperative when purchasing or thinking of getting new wheels and tires. There are also uni-lug wheels that can fit more than one bolt pattern.