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The 2018 Chevy 2500HD features a wheel bolt measuring 8x180mm. This bolt, also called a bolt circle, functions like a lug nut. Its unique design allows it to screw directly into a hole in the wheel's disc, serving as a base onto which the wheel is mounted. By securing the wheel bolt first, the lug nuts can then be effortlessly attached to secure the wheel in place. This streamlined process simplifies replacement and maintenance, eliminating the need to manually align each lug nut.
The truck's wheel bolt pattern is 8x180mm, and this applies to all 2500 Silverados.
Not all 2500 series have the same 8 times multiplication by 180.
My pick-up truck belongs to the 3500 series.
Eight multiplied by one hundred eighty.