* Your owner's manual: This is the most reliable source.
* The sticker on your driver's side doorjamb: This sticker often lists tire size and other vehicle specifications, sometimes including the bolt pattern.
* The wheels themselves: The bolt pattern is usually stamped onto the back of the wheel.
* A reliable online database: Sites specializing in vehicle specifications might list the bolt pattern for your specific Silverado model (you'll need the exact trim level and engine size).
Common bolt patterns for that era of Silverado include 6x5.5" (6 lug, 5.5 inch bolt circle diameter) and 8x6.5" (8 lug, 6.5 inch bolt circle diameter). However, without knowing the specific model of your 1995 Silverado, I cannot give you a definitive answer.
