This document presents the results of a computer-based dynamic performance assessment of a TATRA Truck with a swing arm suspension. A fully three dimensional TATRA model was created using a commercially available modeling and simulation methodology called Dynamic Analysis and Design Systems (DADS) (1). Limited validation was performed by comparing model predictions with video recordings of field tests (2). The model was considered accurate enough to predict various aspects of ride quality and stability performance, critical to the US Army mission needs. Performance evaluations were made by analyzing state variable time histories and high definition computer-generated animations recorded on video tape. One-to-one comparisons of the TATRA and a standard, solid-axle, heavy tactical vehicle (HTV) operating in various terrain and obstacle negotiation conditions were performed.