Our Jeep got a set of Nitto’s LT285/75R17 Ridge Grappler tires on factory Rubicon wheels that were scored on the cheap. This is a great tire size for a JK, giving an appreciable bump in ride height without killing performance with the factory gears. Wheel spacers are highly recommended for using factory wheels. For our application, 1 1/4-inch spacers from Nitro Gear & Axle were chosen. If you do run a wider tire, a 1 1/2-inch spacer may be a better choice. Wheel spacers work well and can be a much more affordable option than new wheels, but always use a quality wheel spacer and always follow the installation procedure.