sentences:  This is in contrast with conventional setups which place the stiffer springs at the front of the car for superior mechanical grip, that is grip via the vehicle suspension and tires.Coil bind uses aerodynamics to produce grip.As a car approaches the end of a straightaway, the downforce generated by the body of the car should increase the sprung weight until the coil springs compress until they bind and the suspension can no longer travel (hence the name).