Dial The Anti-SquatAlthough it happens to leaf-sprung vehicles, too, if you're running a four-link suspension and the rear of the vehicle rises when you go from Park to Drive, or the rear rises when you step on the gas, you've got a lot of anti-squat. Some anti-squat is desirable since it pushes the rear tires down and into the ground, increasing bite. If the rear of the vehicle sinks, then you don't have enough anti-squat. There's a fine line to dial; too much or too little can lead to tire chatter and an inability of the rear tires to hook up. You can mess with control arm lengths to increase or decrease bite, but the biggest difference comes from the geometry of the control arm mounts. Short arm suspensions with more than 4 inches of lift usually have too much anti-squat, so a long arm system can help optimize anti-squat in a lifted Jeep.