VEHICLE FRAME ASSEMBLY

A vehicle includes a pair of frame rails elongated along a longitudinal axis, each of the frame rails having a downward deformation zone, the frame rails bendable at the downward deformation zones from a first position to a second position beneath the first position. The vehicle includes a tire supported between the pair of frame rails at the downward deformation zones. The vehicle includes a spare tire retention member supported between the pair of frame rails forward of the downward deformation zones.