The overall aim of this project is to understand the origins of energy dissipation mechanisms in filled rubbers. These effects are responsible for much of the carbon footprint associated with road transport today. We have so far successfully used QENS and SANS to address the dynamics and structure of model silica filled polybutadiene nanocomposites. QENS shows little impact of crosslinking on dynamics, but a significant reduction in polymer mobility when silica nanoparticles are added. We now turn our attention to the dynamics of these systems whilst under an imposed strain, which mimics the process responsible for rolling resistance in tyres. QENS will be carried out on a series of filled rubber samples in which the filler and loading and applied strain are systematically varied.