Before you can buy the right tire chains, you need one key detail: your tire size. Don’t worry, it’s easier to find than you think. Plus, we’re going to show you how to use our search using your tire size!
Where to Find Your Tire Size
Your tire size is printed on the sidewall of your tire. It will be a combination of numbers and letters that describe:
- Tire width
- Aspect ratio (sometimes omitted on larger tires)
- Wheel diameter
How to Read Your Tire Size
Most passenger vehicles use three-number formats, while tractors and heavy equipment often use two-number formats.
Example 1: Standard Tire (Three Numbers)
205/40R17
- 205 = Tire width in millimeters (Size 1)
- 40 = Aspect ratio (sidewall height compared to width, Size 2)
- 17 = Rim diameter in inches (Rim Size)
Example 2: Tractor or Heavy Equipment Tire (Two Numbers)
7.00-14
- 7.00 = Tire width in inches (Size 1)
- 14 = Rim diameter in inches (Rim Size)
👉 If you have a larger tire with only 2 numbers, you’ll skip the “Size 2” since there is none.
Using the Tire Chain Finder
Once you know your tire size, finding the right chains is simple. Let’s say your tire reads P205/40R17 94T.
- Enter 205 in Size 1 (width)
- Enter 40 in Size 2 (aspect ratio)
- Enter 17 in Rim Size (wheel diameter)
- Click Shop Now → You’re matched instantly with compatible chains.
💡 Tip: Double-check your tire sidewall to make sure the numbers match before ordering.
Search By Tire Size
How do I find my tire size?
Ready to Buy Chains?
Finding your tire size is step one. Step two is getting the right chains to keep you safe on winter roads. Luckily for you, we’ve got guides and resources to help narrow down the list to the perfect chains.