Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/35-18 | 225/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.2 (614.7) | 25.97 (659.7) | 1.77 (45) 7.3% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 76.03 (1931.14) | 81.59 (2072.51) | 5.57 (141.37) 7.3% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.99 (101.25) | 0.89 (22.5) 28.6% |
| Revolutions per mile (km) | 833.37 (517.83) | 776.52 (482.51) | -56.85 (-35.32) -6.8% |
225/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.46 mph (34.54 km/h) |
| 25 mph (40.23 km/h) | 26.83 mph (43.18 km/h) |
| 30 mph (48.28 km/h) | 32.2 mph (51.81 km/h) |
| 35 mph (56.33 km/h) | 37.56 mph (60.45 km/h) |
| 40 mph (64.37 km/h) | 42.93 mph (69.09 km/h) |
| 45 mph (72.42 km/h) | 48.29 mph (77.72 km/h) |
| 50 mph (80.47 km/h) | 53.66 mph (86.36 km/h) |
| 55 mph (88.51 km/h) | 59.03 mph (94.99 km/h) |
| 60 mph (96.56 km/h) | 64.39 mph (103.63 km/h) |
| 65 mph (104.61 km/h) | 69.76 mph (112.27 km/h) |
| 70 mph (112.65 km/h) | 75.12 mph (120.9 km/h) |
| 75 mph (120.7 km/h) | 80.49 mph (129.54 km/h) |
| 80 mph (128.75 km/h) | 85.86 mph (138.17 km/h) |
| 85 mph (136.79 km/h) | 91.22 mph (146.81 km/h) |
| 90 mph (144.84 km/h) | 96.59 mph (155.44 km/h) |
| 95 mph (152.89 km/h) | 101.95 mph (164.08 km/h) |
| 100 mph (160.93 km/h) | 107.32 mph (172.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1976 | 2296 | 2472 | 2582 | 2699 | 2783 | 2876 | 2985 | 3137 | 3288 | 3456 | 3591 | 3834 | 4104 | 4314 | 4448 | 4524 | 4801 | 5188 | 6029 |
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