Latest US tire market update: Anti-dumping duties on Southeast Asian ST and passenger tires have been maintained, lifting landed import costs for these sources. Natural rubber, carbon black and steel cord prices keep rising steadily. Major global tire manufacturers including Goodyear and Bridgestone have issued formal Q4 price increase notices. Faced with volatile costs, many local tire dealers are moving to lock pricing in advance and searching for reliable supply channels to avoid unexpected cost surges and unstable shipments.