Tokyo Commodity Exchange (TOCOM) futures, which set the tone for tyre rubber prices in Southeast Asia, traded mostly lower during the day as the yen held not far from a two-month high against the dollar.
A stronger yen makes Japanese currency-denominated assets more expensive when purchased in other currencies.
The new most-active rubber contract on the Shanghai futures exchange for May delivery fell 105 yuan to finish at 13,980 yuan (US$2,118) per tonne after touching 14,045 yuan earlier, the highest since Nov. 15.
(US$1 = 6.6018 Chinese yuan)
(US$1 = 111.2500 yen)