Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-19 | 225/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.89 (657.6) | 27.74 (704.7) | 1.85 (47.1) 7.2% |
| Width inches (mm) | 4.92 (125) | 8.86 (225) | 3.94 (100) 80% |
| Circum. inches (mm) | 81.34 (2065.91) | 87.16 (2213.88) | 5.83 (147.97) 7.2% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 4.87 (123.75) | 1.43 (36.25) 41.4% |
| Revolutions per mile (km) | 779 (484.05) | 726.93 (451.69) | -52.07 (-32.35) -6.7% |
225/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.43 mph (34.49 km/h) |
| 25 mph (40.23 km/h) | 26.79 mph (43.12 km/h) |
| 30 mph (48.28 km/h) | 32.15 mph (51.74 km/h) |
| 35 mph (56.33 km/h) | 37.51 mph (60.36 km/h) |
| 40 mph (64.37 km/h) | 42.86 mph (68.98 km/h) |
| 45 mph (72.42 km/h) | 48.22 mph (77.61 km/h) |
| 50 mph (80.47 km/h) | 53.58 mph (86.23 km/h) |
| 55 mph (88.51 km/h) | 58.94 mph (94.85 km/h) |
| 60 mph (96.56 km/h) | 64.3 mph (103.48 km/h) |
| 65 mph (104.61 km/h) | 69.66 mph (112.1 km/h) |
| 70 mph (112.65 km/h) | 75.01 mph (120.72 km/h) |
| 75 mph (120.7 km/h) | 80.37 mph (129.35 km/h) |
| 80 mph (128.75 km/h) | 85.73 mph (137.97 km/h) |
| 85 mph (136.79 km/h) | 91.09 mph (146.59 km/h) |
| 90 mph (144.84 km/h) | 96.45 mph (155.22 km/h) |
| 95 mph (152.89 km/h) | 101.8 mph (163.84 km/h) |
| 100 mph (160.93 km/h) | 107.16 mph (172.46 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1850 | 2149 | 2314 | 2417 | 2527 | 2606 | 2692 | 2795 | 2936 | 3078 | 3235 | 3361 | 3590 | 3842 | 4038 | 4164 | 4235 | 4495 | 4857 | 5644 |
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