美国政府要求凡进口到美国的轮胎必须标示“3T”指标。目前,我国生产的部分轮胎已标示“3T”指标。美国交通运输部规定,轿车轮胎上必须有轮胎磨耗(Tread Wear)、温度(Temperature)、牵引力(Traction)指标,简称“3T”指标。“3T”指标是按照美国轮胎统一质量定级体系(UTQGS)的要 The U.S. government requires all tires imported into the United States to be labeled “3T”. At present, some tires produced in China have been labeled “3T” indicators. The United States Department of Transportation stipulates that there must be Tread Wear, Temperature, Traction, or “3T” indicators on a car’s tires. “3T” indicator is in accordance with the United States Tire Unified Quality Rating System (UTQGS) to be