- Solid center rib improves steering response while reducing noise. - Four wide, notched circumferential grooves offer resistance to hydroplaning, while improving snow and soft-surface traction. - High density 'zigzag' sipes enhance wet traction and winter performance on snow and ice while maintaining tread element rigidity. - Semi-closed shoulder design (exclusive notched shoulder rib) to provide long, even wear and increased cornering performance while also reducing noise. - Variable tread block pitch sequence reduces noise for a quiet ride.