<div class="htmlview paragraph">This paper examines the service environment of the truck tire and rim assembly, then describes a simplified approach to duplicate this environment in the laboratory. The objective of this laboratory procedure is to evaluate tire lubricants, balancers, and sealants and to determine their potential effects on truck tires and rims. The results of these tests indicate that this method provides a suitable means to compare the service performance of additives. Of 23 commercially available additives tested, only a few can be considered acceptable for the tire and rim assembly.</div>