TIRE WITH TREAD FOR COMBINATION OF LOW TEMPERATURE PERFORMANCE AND FOR WET TRACTION

摘要

A pneumatic tire having a circumferential tread is provided. The tread comprises a rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr):
(A) 100 phr of at least one diene-based elastomer comprising:
(1) 25 to 75 phr of a styrene/butadiene elastomer having a Tg in a range of from -35°C to -5°C,
(2) 25 to 75 phr of a high cis 1,4-polybutadiene rubber having a Tg in a range of from -100°C to -109°C,
(3) 3 to 50 phr of a low number average molecular weight liquid styrene/butadiene polymer having a Tg in a range of from -30°C to 0°C;
(B) 50 to 250 phr of a filler comprising a combination of silica and carbon black in a ratio of at least 9/1 together with a silica coupling agent having a moiety reactive with hydroxyl groups on said silica and another different moiety interactive with said diene-based elastomers and/or polymer;
(C) 5 to 35 phr of a resin comprising at least one of a terpene, coumarone indene and styrene-alphamethylstyrene resin; and
(D) 10 to 50 phr of a vegetable triglyceride oil.