What does ZR mean on the side of my tire?

ZR shown on the sidewall of your tire is a reference to the tire's speed rating.. Historically, the speed rating ZR on a tire meant that the construction of the tire could reach of 150 miles or 240 kilometers per hour.

Today, a tire labeled ZR, has more capabilities than before. ZR can be classified into 3 different speed ratings, which can be either W, Y or Z. If you are looking for a specific tire speed rating, make sure to select the appropriate speed rating from our speed rating selector.

You can compare speed ratings using the table below;