* Wheel bolt pattern: The number of lug nuts and the distance between them must be identical. This is crucial for safety. Using the wrong bolt pattern is dangerous and will prevent the wheel from mounting properly.
* Wheel offset: This is the distance between the wheel's mounting surface and the centerline of the wheel. The offset needs to be compatible with the car's suspension and brake calipers. An incorrect offset can cause rubbing against the suspension components, brakes, or bodywork.
* Center bore: The hole in the center of the wheel must be the correct size to fit over the hub of your car's axle. Too small, and it won't fit; too large, and it will be wobbly and unsafe.
* Tire size: Even if the wheel fits, the tire size you choose for the 16-inch wheel will impact things like speedometer accuracy, rubbing, and overall ride and handling. You'll need to find a tire with a diameter close to your original 15-inch tire's diameter to avoid problems.
In short: Don't just assume you can fit a 16-inch wheel. You must check the specifications of your car's wheel and tire size in your owner's manual or on the sticker located in the driver's side door jamb. Then, you need to find 16-inch wheels with matching bolt pattern, offset, and center bore. Even then, ensure the tires you select work with the new wheel size. If you're unsure, consult a tire professional. Using the wrong wheels is extremely dangerous.
