Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/35-18 | 225/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.93 (607.7) | 25.97 (659.7) | 2.05 (52) 8.6% |
| Width inches (mm) | 8.46 (215) | 8.86 (225) | 0.39 (10) 4.7% |
| Circum. inches (mm) | 75.16 (1909.15) | 81.59 (2072.51) | 6.43 (163.36) 8.6% |
| Sidewall Height inches (mm) | 2.96 (75.25) | 3.99 (101.25) | 1.02 (26) 34.6% |
| Revolutions per mile (km) | 842.97 (523.79) | 776.52 (482.51) | -66.45 (-41.29) -7.9% |
225/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.71 mph (34.94 km/h) |
| 25 mph (40.23 km/h) | 27.14 mph (43.68 km/h) |
| 30 mph (48.28 km/h) | 32.57 mph (52.41 km/h) |
| 35 mph (56.33 km/h) | 37.99 mph (61.15 km/h) |
| 40 mph (64.37 km/h) | 43.42 mph (69.88 km/h) |
| 45 mph (72.42 km/h) | 48.85 mph (78.62 km/h) |
| 50 mph (80.47 km/h) | 54.28 mph (87.35 km/h) |
| 55 mph (88.51 km/h) | 59.71 mph (96.09 km/h) |
| 60 mph (96.56 km/h) | 65.13 mph (104.82 km/h) |
| 65 mph (104.61 km/h) | 70.56 mph (113.56 km/h) |
| 70 mph (112.65 km/h) | 75.99 mph (122.29 km/h) |
| 75 mph (120.7 km/h) | 81.42 mph (131.03 km/h) |
| 80 mph (128.75 km/h) | 86.85 mph (139.76 km/h) |
| 85 mph (136.79 km/h) | 92.27 mph (148.5 km/h) |
| 90 mph (144.84 km/h) | 97.7 mph (157.24 km/h) |
| 95 mph (152.89 km/h) | 103.13 mph (165.97 km/h) |
| 100 mph (160.93 km/h) | 108.56 mph (174.71 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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