In collaboration with a global OEM the structural analysis and fatigue life prediction was carried out on all the components of a innovative integral link rear suspension. This involved close work with the OEM designers to produce lightweight suspension components that were durable for standard, fatigue and abuse loadcases. Directional stiffness of key components such as the subframe were calculated and used during the design iterations to meet the ride and handling guideline targets. This resulted in an optimised, durable rear suspension with the desired structural rigidity required for the best in class vehicle dynamics. This suspension was utilised for both luxury sedan and luxury SUV.