* Bolt Pattern: This refers to the number of lug nuts and the distance between them. It's usually expressed as something like 5x114.3mm (meaning 5 lug nuts on a circle with a diameter of 114.3mm). Find this information on your existing 16" rim.
* Wheel Offset: This is the distance between the mounting surface of the wheel and the centerline of the wheel. A positive offset means the mounting surface is closer to the outside of the wheel, while a negative offset is closer to the inside. Again, check your current rims.
* Center Bore: This is the diameter of the hole in the center of the wheel that fits over the hub on your vehicle. This needs to be the correct size or you'll need hub-centric rings.
Once you have these three specifications, you can search online retailers (like Tire Rack, Discount Tire, etc.) using these parameters to find compatible rims. You can also usually find this information on your vehicle's owner's manual. Make absolutely certain the new rims match these specifications before purchasing. Using incorrect rims can lead to serious safety issues.
Beyond those three crucial specs, consider:
* Rim Width: While the bolt pattern, offset, and center bore determine if a wheel *fits*, the width will affect the look and possibly the tire size you can use. Too narrow or too wide can cause handling issues.
* Backspacing: This is closely related to offset, and refers to the distance between the wheel mounting surface and the inner edge of the rim. Again, compatibility needs to be confirmed for safe operation.
In short: Don't just look for "16-inch rims." Find the specifics of your current wheels, and then search for others matching those exact specifications.
