Have you ever looked closely at the sidewall of your vehicle's tires and wondered what all those numbers mean? While they may look like a random jumble of digits, they actually provide important information about the tire's size, capabilities, and specifications. Knowing how to read tire numbers can help you maintain your vehicle's tires properly to optimize performance, safety and fuel efficiency on the roads of Cincinnati and beyond.
Tire Size
The tire size is the largest number on the sidewall and is usually in a format like 215/65R15. In this example, 215 is the width of the tire in millimeters from sidewall to sidewall. The number after the slash, 65, is the aspect ratio, which is the height of the sidewall as a percentage of the width. R indicates it's a radial tire, and 15 is the diameter of the wheel in inches. If you're looking for new tires in the Dayton area, knowing your tire size is crucial to ensure a proper fit.
Load Index and Speed Rating
The load index and speed rating are usually together at the end of the tire size, like 89H. The load index, 89 in this case, indicates the maximum weight the tire can support when properly inflated. Higher numbers mean the tire has a greater load capacity. The letter is the speed rating, which tells you the maximum speed the tire is designed to handle. For example, H means the tire is rated for speeds up to 130 mph. It's important for Mason drivers to choose tires with the correct load index and speed rating for their vehicle and driving habits.
Treadwear, Traction and Temperature Grades
Many tires also have numbers for treadwear, traction and temperature grades. Treadwear is a comparative rating based on a tire's wear rate when tested under controlled conditions. A higher number means the tire will likely last longer. Traction and temperature grades are letter ratings that represent a tire's ability to stop on wet pavement and its resistance to heat, respectively, when tested under controlled conditions. Lebanon vehicle owners should keep in mind that these ratings are determined by the tire manufacturers, not an independent organization.
Maintaining Your Tires
No matter what type of tires you have on your vehicle, proper maintenance is key to getting the most life out of them. This includes keeping your tires properly inflated, which can improve fuel economy, handling and tread life. It's a good idea to check your tire pressure at least once a month, especially for Loveland commuters. Rotating your tires every 5,000 to 8,000 miles can also help them wear more evenly. When the tread is worn down to 2/32 of an inch, it's time for new tires.
If you have any questions about tire maintenance or need to schedule a tire rotation or replacement, the experts at the service center at Jeff Wyler Kings Nissan are here to help. We can ensure your vehicle's tires are in optimal condition to keep you safe on the road.