US Natural Rubber (TSR) prices rose 6.88% in May 2026 as feedstock costs climbed 4.2%, driven by tyre manufacturer substitution away from war-disrupted synthetic isoprene rubber and persistent global structural supply deficits projected at 600,000–800,000 tonnes annually through 2028. Northeast Asian and African natural rubber prices surged 10.4% and 13.5% respectively, reinforcing elevated US import costs. With Southeast Asian tapping season beginning in May offering seasonal supply relief, prices are anticipated to moderate gradually through Q3 2026, though synthetic substitution demand and EV tyre requirements will sustain a structural premium.
