Learn how to read tire speed ratings and load indexes. Find how how to find tire speed ratings and load index and why they're important when buying new tires.

The tire speed rating indicates the maximum speed at which a tire can carry its maximum load. On the sidewall of your tire (or the sticker in the driver's door, or the owner’s manual), the …

Your tire load rating tells you how much weight your car can handle. View our tire load index chart & learn why this rating is important, from Wheel Works!

Tire load index is an assigned number that corresponds to the maximum weight that a tire can support when properly inflated. The higher the tire's load index number, the greater its load …

May 12, 2025 · The numerical value found preceding the speed rating is referred to as the tire load index. It indicates the tire’s capacity to safely carry a load under maximum air pressure.

Jun 17, 2020 · Use a tire load index chart and speed rating chart to decode the numbers and letters on your tire sidewall and make the best tire choice for your car.

Sep 23, 2025 · Adhering to your tire's speed rating is crucial for maintaining optimal tire function.

A tire’s speed rating, also call its speed index, tells you the maximum speed a tire can safely maintain over time while carrying its maximum load (which is specified in the tire load index).

Nov 23, 2025 · The load index refers to the load-carrying capacity of a tire, or how much weight a tire can support. For example, if a tire has a load index of 89, it can support 580kgs (from …

Nov 10, 2023 · Tire load index, load ratings and load x speed rating chart. Get the guide to understanding tire load index (free) with illustrations and a downloadable chart.