TIRE

A tread 4 of a tire 2 includes a base layer 30 containing a filler including carbon black and silica. A ratio Sr of a content BSi of the silica to a total of a content BCB of the carbon black and the content BSi of the silica is greater than 0.20. The tread 4 includes land portions 12 separated by a circumferential main groove 10. A ratio Ur of a thickness TU of the base layer 30 to a depth DGm of the circumferential main groove 10 is 0.20 or more and 0.60 or less. At least one of the land portions 12 includes a sipe 26 having a bottom 26T within the base layer 30. The ratio Sr, the thickness TU of the base layer 30, and a depth DU of the sipe 26 in the base layer 30 satisfy a relational expression: Sr × DU/TU ≥ 0.010.