Attention! Due to the size of the tires Packages might be SEPARATED in the courier facility and not be DELIVERED on the SAME DAY even though we do ship them together. Tracking information can be checked by logging on to the courier website with the master tracking number you will receive via email. For example you can receive 3 tires in one day and the 4th one the next day or the day after or one tire in one day and the second one day after. We understand that this is a big inconvenience for our buyers however this is ABSOLUTELY out of our control. Dunlop SP31 A/S (OE) FEATURES AND BENEFITS All weather traction Enhanced controllability Comfortable driving experience OVERVIEW The Dunlop SP31 A/S (OE) is a touring all season tire manufactured for passenger vehicles. This model is the original equipment tire of select vehicles. The tire ensures first-rate all weather traction. It combines its asymmetric tread design with the all season tire compound to increase the dry wet and winter weather road gripping capability. The compound keeps its rubber flexibility throughout the year including in colder winter weather while the tread elements firmly grip the road surface to boost the tire s all weather performance. The tread features circumferential grooves and a longitudinal channel that eliminate water and slush from below the tire s footprint effectively resisting hydroplaning. In this manner the tire ensures a safer year round performing capability and power. The tire s tread pattern enhances its controllability. The asymmetric tread design maintains the tire s constant road contact in all conditions which increases its steering responsiveness and driving stability. In other words the tire is quicker and more accurate in its response to the steering instructions given by the driver while its structure is stabilized during the drive. The optimal shoulder tread block placement heightens the number of biting edges gripping the road surface during cornering. The better grip in maneuvering situations promotes a secure control over the vehicle. The SP31 A/S (OE) offers a comfortable and quiet drive. The tire s steel belt construction maintains the tire s optimal shape under the driving and load pressure affecting the model. The prevention of the shape s deformation enables the tire to closely follow the road surface at all times. This allows the tire to absorb the shock of driving which significantly lowers the road vibrations felt in the vehicle s cabin. Furthermore the tread features a multi-pitch sequence. The variable pitch sequence manages to decrease the road noise levels by negating them the moment they are generated. It uses a variable sound frequency that cancels the road and tread pattern noise out while the tires are in motion guaranteeing an enjoyable driving experience. Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold the year of their manufacture will not shorten their service life.