What's the 2002 Jeep Liberty biggest tire size?

The 2002 Jeep Liberty is able to fit a max tire size of 245 70R16. Larger tires might fit on the wheel, but wheel lead to sub-optimal and potentially dangerous driving conditions. There will most likely be rubbing of the tire on the body of the car, which is not ideal. For Your safety, it is recommended that You stay within the manufacturer's range of tire sizes and use all the proper related accessories to this. In some cases, if a professional lift is done on the vehicle, it might be able to accommodate larger tires safely. However, that is done at the risk of voiding any warranties You have. So before doing that, double check You are not potentially exposing Yourself to warranty loss.