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1999 Chevrolet Silverado 2500 HD Extended Cab Bolt Pattern

Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1999 Chevrolet Silverado 2500 HD Extended Cab, along with offset and center bore data.

Bolt Pattern (Lug Pattern)	8x165.1 (8x6.5")
Lug Nut / Bolt Size	N 14x1.50
Center Bore (CB)	116.6 mm
Offset (ET)	26
Torque Specs	140 ft-lbs (190 Nm)

Fitment Notes

The 1999 Chevrolet Silverado 2500 HD Extended Cab has a bolt pattern of 8x165.1.

Imperial Conversion: This bolt pattern is commonly referred to as 8x6.5" in imperial units. When searching for aftermarket wheels, you may see them listed as 8x6.5".

This means it is a 8 lug pattern with a circle diameter of 165.1mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.

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