
SINGAPORE, March 4 (Reuters) -
Japanese rubber futures inched lower on Tuesday as fresh U.S. tariffs on Canada, Mexico and top rubber consumer China came into effect, although a tightening supply outlook capped the losses.
The Osaka Exchange (OSE) rubber contract for August delivery JRUc6, 0#2JRU: ended daytime trade 1 yen lower, or 0.28%, at 361.2 yen ($2.42) per kg.
The rubber contract on the Shanghai Futures Exchange (SHFE) for May delivery SNRv1 edged 90 yuan lower, or 0.51%, to 17,665 yuan ($2,425.18) per metric ton.
The most-active April butadiene rubber contract on the SHFE SHBRv1 fell 360 yuan, or 2.25%, to 13,765 yuan ($1,889.76) per ton.
U.S. President Donald Trump's new 25% tariffs on imports from Mexico and Canada kicked in, along with a doubling of duties on Chinese goods to 20%.
Shares of automakers General Motors GM.N and Ford F.N fell earlier on Tuesday.
The automobile sector is particularly likely to feel the impact of tariffs due to the supply chains that criss-cross the three countries, as well as an expected increase in vehicle prices, said Gustavo Flores-Macias, a public policy professor at Cornell University.
Automobile sales could influence the intensity of automobile manufacturing, which involves using rubber-made tyres.
China retaliated with 10%-15% hikes to import levies covering a range of American agricultural and food products, while also placing 25 U.S. firms under export and investment restrictions.
Rubber production areas in China have stopped harvesting while supply in southern Thailand has shrunk, pushing global natural rubber supply to a seasonal low, Chinese commodities data provider Longzhong Information said in a note.
Rubber crops usually undergo a season of low production from February to May, before a peak harvesting period that lasts until September.
The front-month rubber contract on Singapore Exchange's SICOM platform for March delivery STFc1 last traded at 203.7 U.S. cents per kg, down 0.5%.
($1 = 149.5200 yen)
($1 = 7.2840 Chinese yuan)