* Bolt Pattern (PCD): This refers to the number of lug nuts and the diameter of the circle they form. The 2006 Chevy 1500 typically uses a 6x139.7mm (6x5.5 inch) bolt pattern. This is crucial; the wrong bolt pattern won't even fit on the hub.
* Wheel Diameter: This is measured in inches (e.g., 16", 17", 18", 20"). Your truck likely came with 16" or 17" wheels, but larger diameters are common upgrades. Larger diameter wheels often require tires with lower profile sidewalls to maintain the overall vehicle height.
* Wheel Width: This is also measured in inches (e.g., 7", 8", 9"). Wider wheels can improve handling but might require fender modifications if they're too wide.
* Backspacing/Offset: This is the distance between the mounting surface of the wheel and the inner edge of the wheel. Incorrect backspacing can cause the wheel to rub against the suspension, brakes, or fenders. This is critical and often overlooked. You'll want to find wheels with the correct backspacing for your truck's year and model.
* Hub Bore: This is the diameter of the center hole in the wheel. It needs to be the correct size to fit snugly over the hub of your truck. A wheel with too small a bore won't fit; one that's too large might require centering rings.
Where to Find the Right Information:
1. Your Existing Wheels: The information (bolt pattern, diameter, width, and offset) is usually stamped on the back of your current wheels.
2. Online Wheel Retailers: Websites like Tire Rack, Discount Tire, and others allow you to specify your vehicle's year, make, and model. They'll show you wheels that are guaranteed to fit.
3. Your Vehicle's Owner's Manual: While it might not list every possible wheel, it may provide some guidance on wheel specifications.
In short: Don't just rely on the bolt pattern. You *must* ensure the wheel diameter, width, backspacing/offset, and hub bore are compatible with your 2006 Chevy 1500 to avoid problems. Use a reputable online retailer or consult a tire professional for the best results.
