Tires represent the most important maintenance item on a trailer. They remain the number one reason for trailer breakdowns, weighing in at 48 percent of road calls, according to a published survey by Federal Motor Carrier Safety Administration (FMCSA). It is also estimated that up to 85 percent of blowouts could be prevented if tires were properly inflated. While the number one problem with trailer tires is under-inflation, over-inflation and mismatched duals also account for their share of trouble. This whitepaper will look at the specifics associated with each condition.