Rockridge 4wd sells Jeep wheel spacers & adapters for a variety of applications. Typically wheel spacers are used to offset tires for clearance from the frame or inner wheel wells after installing bigger than stock tires or wheels with an incorrect backspacing. Wheel adapters are normally used to run wheels with different bolt patterns then what the vehicle came with stock. Jeep JK owners typically have to run wheel spacers if installing larger offroad tires on stock JK wheels. We have supplied a bolt pattern reference chart below for easy and confident ordering.