
SINGAPORE, March 6 (Reuters) -
Japanese rubber futures hit a 3-1/2-month low on Thursday, pressured by fears of a trade war between the United States and top rubber consumer China, although tariff reprieves for some automakers cushioned the fall.
The Osaka Exchange (OSE) August rubber contract JRUc6, 0#2JRU: eased 2.7 yen, or 0.76%, to 351.3 yen ($2.36) per kg by 0215 GMT.
Prices hit 347.6 yen earlier in the session, their lowest since November 19, 2024.
The May rubber contract on the Shanghai Futures Exchange (SHFE) SNRv1 rose 75 yuan, or 0.43%, to 17,460 yuan ($2,411.07) per metric ton.
The most-active April butadiene rubber contract on the SHFE SHBRv1 ticked up 10 yuan, or 0.07%, to 13,655 yuan ($1,885.63) per ton.
"The trade war is adding volatility to the market, leading to cautious sentiment," said a Singapore-based trader.
U.S. President Donald Trump's new 25% tariffs on imports from Mexico and Canada took effect on Tuesday, along with a doubling of duties on Chinese goods to 20%.
Beijing retaliated immediately with hikes to import levies covering $21 billion worth of American agricultural and food products.
Trump will exempt some automakers from new tariffs for a month as long as they comply with existing free-trade rules, the White House said on Wednesday.
Automobile sales could influence the intensity of automobile manufacturing, which involves using rubber-made tyres.
"While rubber prices remain supported by... supply factors, prevailing negativity is making the market wary," the trader said.
Global natural rubber production is expected to fall short of consumption for the fifth consecutive year in 2025, as higher prices fail to encourage tapping in major producing countries, a senior industry official said.
The front-month rubber contract on Singapore Exchange's SICOM platform for March delivery STFc1 last traded at 201.4 U.S. cents per kg, down 0.1%.
($1 = 149.0400 yen)
($1 = 7.2416 Chinese yuan)