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Vehicle dynamics models often assume that the suspension attachment locations on the chassis are fixed and do not deform. However, this is not always a good assumption as the chassis can deform causing the suspension-to-chassis attachment locations to move in response to the forces transmitted through the suspension. When the suspension attachment points move, the kinematic and compliance properties of the suspensions can be affected. This can create a feedback situation where the chassis deformation affects the suspension response which affects the chassis loading. When developing a vehicle dynamics model, the chassis is usually modeled as either a rigid member, as a series of lumped masses, or as a multi-body structure. The progression from rigid body to lumped mass to multi-body chassis models generally improves the resulting simulations as the estimation of suspension behavior improves.