Toyota Tire Size Calculator
Compare OEM vs upgrade tire sizes for Camry, Corolla, RAV4, and 4Runner — instant diameter difference and speedometer error check.
Quick Example
A RAV4 LE/XLE ships with 225/65R17 (28.5" diameter). A popular upgrade to 235/60R18 (29.1") is a +2.1% diameter change — comfortably inside the ±3% safe zone, so no lift or trimming needed. Enter your exact model and target size below for the precise number.
OEM diameter: 28.52"
Diameter: 29.10"
Diameter Difference
+2.06%
225/65R17 235/60R18 (+0.59")
Speedo Error
+2.06%
OEM Revs/Mile
707
New Revs/Mile
693
Safe Threshold
±3%
AI Insight
Powered by AIGet a plain-English explanation of your results — what they mean for your vehicle and driving experience.
Toyota Tire Guide
Own a Tacoma? See the dedicated Tacoma Tire Size Calculator for lift-specific fitment.
Common Toyota Tire Upgrades
| Model | OEM Size | Target Size | Diff % |
|---|---|---|---|
| Corolla LE (15") | 195/65R15 (25.0") | 205/55R16 (24.9") | -0.4% |
| Camry LE (17") | 215/55R17 (26.3") | 235/45R18 (26.3") | +0.1% |
| RAV4 LE/XLE (17") | 225/65R17 (28.5") | 235/60R18 (29.1") | +2.1% |
| 4Runner SR5 (17") | 265/70R17 (31.6") | 265/65R18 (31.6") | -0.1% |
Diameters computed via Rim × 25.4 + 2 × (Width × Aspect ÷ 100). Always verify against your door-jamb placard.
How to Use This Calculator
- Select your Toyota model and trim to load its OEM tire size.
- Enter the target tire size you're considering.
- Review the diameter difference, speedometer error, and fitment verdict.