What is the offset of a 20 inch factory Chevy silverado rim?

There's no single answer to the offset of a 20-inch factory Chevy Silverado rim. The offset varies depending on the *year*, *model* (1500, 2500, 3500), *trim level*, and even sometimes the specific option package of the Silverado.

To find the offset for your specific Silverado, you need to:

1. Check your existing rim: The offset is usually stamped on the back of the wheel itself. Look for a number preceded by ET (European standard) or sometimes just a number.

2. Check your owner's manual: Your owner's manual should specify the wheel and tire specifications for your specific vehicle.

3. Check the sticker on your driver's side doorjamb: This sticker often lists tire size and other relevant information, which might indirectly help you determine the correct offset by searching online for that tire size and Silverado model year.

4. Use a parts website: Websites like Tire Rack or Discount Tire allow you to search for wheels based on your vehicle's year, make, and model. They'll show you the correct offset for factory wheels.

Without knowing the specific year and model of your Silverado, it's impossible to give you a definitive answer.