An object is to enhance traction performance on snowy road surfaces while suppressing a drop in braking performance and handling stability performance on dry road surfaces and icy road surfaces.A tread (12) includes first auxiliary grooves (21) formed on one groove width direction side of lug grooves (18, the first auxiliary grooves (21) opening onto the lug grooves (18) and terminating inside central land portion rows (16) (land portions), and second auxiliary grooves (22) formed on the other groove width direction side of the lug grooves (18), the second auxiliary grooves (22) opening onto the lug grooves (18) so as to face opening portions (21A) of the first auxiliary grooves (21) that open onto the lug grooves (18), and terminating inside the central land portion rows (16) (land portions).