Toyota Tire Size Guide: Crack the Code and Find Your Perfect Fit
You’re staring at a string of numbers on your tire’s sidewall—195/65R15—and you have no idea what it actually means.
Don’t worry, you’re not alone. That combination of letters and numbers is actually a simple code that tells you everything about your tire. Once you learn to read it, you’ll never be confused again.
TL;DR
Toyota tire sizes follow a standard format: Width/Aspect Ratio R Diameter. For example, 225/65R17 means 225mm wide, 65% sidewall height, Radial construction, and fits a 17-inch wheel. The correct size for your specific Toyota is listed on the driver’s door jamb sticker or in your owner’s manual. Different trims and packages often come with different tire sizes, so always check your vehicle’s sticker—not what a friend has or what you see online.
Key Takeaways
- The Tire Code Formula: [Width]/[Aspect Ratio] R [Diameter] (e.g., 225/60R18)
- Width: The first number is the tire width in millimeters
- Aspect Ratio: The second number is sidewall height as a percentage of width
- R: Stands for Radial construction (virtually all modern tires)
- Diameter: The last number is the wheel size in inches
- Load Index & Speed Rating: Letters after the size tell you capacity and top speed
- Always Check Your Door Jamb: The definitive size is on the sticker inside the driver’s door frame
How to Read a Toyota Tire Size
Let’s decode 225/60R18—a common size on the RAV4.
Step 1: Tire Width (225)
The first number is the width of the tire from sidewall to sidewall in millimeters . In this case, it’s 225mm wide.
Step 2: Aspect Ratio (60)
The second number is the aspect ratio—the sidewall height as a percentage of the width . So 60 means the sidewall is 60% of 225mm (about 135mm).
- Lower number = shorter sidewall = sportier handling, but a firmer ride
- Higher number = taller sidewall = more cushion, but less sharp handling
Step 3: Tire Construction (R)
The “R” stands for Radial construction. Almost every tire on the road today is a radial .
Step 4: Wheel Diameter (18)
The last number is the wheel diameter in inches—you need an 18-inch rim to mount this tire.
Load Index & Speed Rating
After the size, you’ll see something like 100V :
- 100 = Load Index (how much weight the tire can carry)
- V = Speed Rating (the maximum safe speed)
Toyota Tire Sizes by Popular Model
Here are the most common tire sizes for popular Toyota models. Remember: Trims and packages can change the size—always check your door jamb.
| Model | Common Tire Sizes |
|---|---|
| Corolla | 195/65R15, 205/55R16, 225/40R18 |
| Camry | 215/55R17, 235/45R18, 235/40R19 |
| RAV4 | 225/65R17, 225/60R18, 235/55R19 |
| Highlander | 235/65R18, 245/55R19, 235/55R20 |
| 4Runner | 265/70R17, 265/65R18, 275/55R20 |
| Tacoma | 245/75R16, 265/65R17, 265/60R18 |
| Tundra | 275/65R18, 275/55R20 |
| Prius | 195/65R15, 215/45R17 |
| Yaris | 185/65R15, 195/55R16, 205/45R17 |
| C-HR | 215/60R17, 225/50R18, 225/45R19 |
| Land Cruiser | 245/70R17, 265/65R17, 265/55R19 |
| GR86 | 215/40R18 |
| GR Supra | Front: 255/35R19, Rear: 275/35R19 |
Where to Find Your Toyota’s Exact Tire Size
The only place to get the exact tire size for your specific Toyota is on your vehicle itself:
- Driver’s Door Jamb: Look for a sticker on the door frame or B-pillar
- Owner’s Manual: The tire size and pressure are listed in the manual
- Inside the Glove Box: Some models have the sticker here
“Trims, packages, and optional upgrades may affect tire size and type. Always check your vehicle’s placard.”
Why the Right Tire Size Matters
Using the wrong tire size isn’t just a minor inconvenience—it can affect:
- Speedometer Accuracy: A different diameter tire will throw off your speedometer and odometer
- Fuel Economy: Incorrect tire size can reduce efficiency, especially on hybrids
- Handling and Safety: Wrong size affects grip, braking, and stability
- Transmission Wear: Mismatched tires on AWD vehicles can damage the drivetrain
- Hybrid Efficiency: Under-inflated or wrong-size tires increase rolling resistance and hurt fuel economy
The “Max PSI” Warning
You’ll see a number like Max PSI 44 on the tire sidewall. This is not the recommended pressure—it’s the maximum the tire can handle .
Always use the recommended pressure found on your door jamb sticker, not the maximum listed on the tire.
FAQ: Toyota Tire Sizes
What happens if I use the wrong tire size on my Toyota?
Your speedometer will be inaccurate, handling could be compromised, fuel economy may drop, and if you have AWD, mismatched tires can damage the drivetrain .
Where can I find the recommended tire size for my Toyota?
Check the sticker on the inside of the driver’s door frame, the glove box, or your owner’s manual .
Can I upsize my Toyota tires for a better look?
Yes, but it will change ride comfort, fuel economy, and speedometer accuracy. The Innova Hycross guide notes that upsizing from 16 to 18 inches reduces comfort noticeably .
Why are hybrid Toyota tires different?
Hybrid models like the RAV4 Hybrid benefit from tires with lower rolling resistance, which extends electric-only driving range and improves fuel economy .
What do the letters after the tire size mean?
The load index (number) tells you how much weight the tire can carry, and the speed rating (letter) tells you the maximum safe speed. For example, “100V” means 800kg capacity and 240 km/h top speed .
For further reading:
Now that you know how to read the code, what tire size is on your Toyota? Share it in the comments—we’ll help you decode it!