1999 Jaguar XK8 Tire Size

The original tire size for your 1999 Jaguar XK8 is listed below. Tap on the box to view a color-coded explanation of the best Jaguar XK8 tire size.

245/50ZR17 99Y

Simplified Size:  245-50-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 1999 Jaguar XK8 is 245/50ZR17 99Y.  A color-coded explanation of the 1999 Jaguar XK8's tire size is shown below.


This number indicates that your tire has a width of 245 millimeters.


The tire size was designed to fit rims or wheels that are 17 inches in diameter.


This tire has a load index of 99, which means it's capable of carrying a load of 1705 pounds (775 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.


This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h).  A tire's speed class is less specific than the speed rating.


This number means that your tire has an aspect ratio of 50%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 50% of the width.  In this case, the sidewall height works out to be 122 millimeters.


This letter denotes how your tire was constructed.  Radial is the standard construction method for about 99% of all tires sold today.

BBias Belt

This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.