Abstract: An improved G-seat system for providing kinesthetic cues to the operator of a vehicle simulator in which the motion sensations associated with the "G" forces are simulated by the motion of a single seat plate (62) having a pair of passive thigh ramps (78) mounted thereon and the variation in the degree of inflation of thin bladders (82A,B) which overlie the seat plate. Raised surfaces (80) may be provided on the plate beneath the ischial tuberosity region of the operator to increase the dynamic range of perceived g-loading effects. A backrest plate (92) may be provided for motion in conjunction with the seat plate and a thin bladder (128) may likewise be provided theron. Driven radial elements (108,110) may then be positioned on the lower part of the backrest plate to augment pressure cues at selected areas of the operator's back.