The Master Guide to Tire Ratings and Sidewall Codes
Don't let the numbers confuse you. Our expert breakdown of the tire rating chart ensures you choose the safest and most durable tires for your vehicle.
Understanding the Tire Rating Chart
Every tire has a story to tell through its sidewall. Understanding tire ratings is the difference between a smooth, safe ride and an expensive mistake. The most common markings you'll see include the size, load index, and speed symbol.
[Image of tire sidewall markings and codes]Decoding Load & Speed
In a code like 225/45R17 94W, the "94" refers to the load index, while the "W" represents the speed rating. Using an incorrect speed rating can negatively affect your car's handling and safety systems.
💡 Pro Tip:
Always match or exceed the tire ratings specified by your vehicle manufacturer. You can find these on the sticker inside your driver-side door jamb.
UTQG Ratings Explained
The Uniform Tire Quality Grade (UTQG) is a mandatory tire rating chart system that ranks tires based on three key factors:
| Rating Category | Definition | Top Grade |
|---|---|---|
| Treadwear | Comparative wear rate (e.g., 600 lasts longer than 200). | 800+ |
| Traction | Braking on wet pavement. | AA |
| Temperature | Resistance to heat generation at high speeds. | A |
Shop Top-Rated Tires
Ready to upgrade? We have curated the highest-rated tires on the market based on verified tire ratings and real-world durability tests.
Michelin Defender 2 (Highest Treadwear)
With one of the best scores on the tire rating chart, this tire is built for longevity and comfort.
View on Amazon ➝Bridgestone Potenza (Max Traction)
If you need "AA" traction tire ratings for high-performance driving, this is the industry standard.
View on Amazon ➝⚠️ SAFETY CHECK
Never mix tires with different tire ratings on the same axle. This can cause unpredictable handling and may interfere with your vehicle's ABS and traction control systems.