Spot rubber finished firm on Tuesday. RSS 4 improved to ₹124 (123.50) a kg, according to traders and the Rubber Board. The market regained strength as sellers stayed back following the enquiries from the tyre sector. March futures firmed up to ₹127.20 (126.19) on the Indian Commodity Exchange (ICEX). RSS 3 improved at its February futures to ₹123.71 (118.89) on the Tokyo Commodity Exchange (TOCOM). Spot rubber rates (₹/kg) : RSS-4: 124 (123.50); RSS-5: 118 (117); ISNR 20: 115.50 (115) and Latex (60% drc): 82.50 (82.50).