TREAD RUBBER COMPOSITION AND PNEUMATIC TIRE

Provided are a tread rubber composition which provides a balanced improvement in wet grip performance and resistance to low-temperature brittleness, and a pneumatic tire including a tread at least partially containing the rubber composition. The present invention relates to a tread rubber composition containing a styrene-butadiene rubber and having a tan δ peak temperature of −10° C. or higher and a brittleness temperature of −40° C. or lower.