This Technical Bulletin provides information on improving vehicle drift/pull using selective tire placement. The information provided is based on the Hunter GSP9700 with StraightTrak® (VAS 6230x ) and John Bean RFV2000 with OptiLine® (VAS 6311A) diagnostic balancer. The diagnostic procedures for selective tire placement, to improve vehicle drift/pull, will require the use of one of the diagnostic balancers previously mentioned.