What does the XL stand for in the size designation of a tire?
XL is the Extra Load load range. The tire is developed for a maximum load of four units higher. For speeds over 130 mph the actual load of V, W and Y rated tires is reduced accordingly. (For further information, refer to the ETRTO Standard Manual 2000, p. 8.) This type of tire is becoming increasingly popular, because the number of fast cars has increased.
XL is the “Extra Load” load range. The tire is developed for a maximum load of four units higher than a non XL tire in the same size. This enables the tire to carry a bit of a heavier load. For speeds over 130 mph the actual load of V, W and Y rated tires is reduced accordingly. (For further information, refer to the ETRTO Standard Manual 2000, p. 8.) This type of tire is becoming increasingly popular because the number of fast cars has increased.