Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/35-18 | 225/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.03 (635.7) | 25.97 (659.7) | 0.94 (24) 3.8% |
| Width inches (mm) | 10.04 (255) | 8.86 (225) | -1.18 (-30) -11.8% |
| Circum. inches (mm) | 78.63 (1997.11) | 81.59 (2072.51) | 2.97 (75.4) 3.8% |
| Sidewall Height inches (mm) | 3.51 (89.25) | 3.99 (101.25) | 0.47 (12) 13.4% |
| Revolutions per mile (km) | 805.84 (500.72) | 776.52 (482.51) | -29.32 (-18.22) -3.6% |
225/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.76 mph (33.4 km/h) |
| 25 mph (40.23 km/h) | 25.94 mph (41.75 km/h) |
| 30 mph (48.28 km/h) | 31.13 mph (50.1 km/h) |
| 35 mph (56.33 km/h) | 36.32 mph (58.45 km/h) |
| 40 mph (64.37 km/h) | 41.51 mph (66.8 km/h) |
| 45 mph (72.42 km/h) | 46.7 mph (75.15 km/h) |
| 50 mph (80.47 km/h) | 51.89 mph (83.51 km/h) |
| 55 mph (88.51 km/h) | 57.08 mph (91.86 km/h) |
| 60 mph (96.56 km/h) | 62.27 mph (100.21 km/h) |
| 65 mph (104.61 km/h) | 67.45 mph (108.56 km/h) |
| 70 mph (112.65 km/h) | 72.64 mph (116.91 km/h) |
| 75 mph (120.7 km/h) | 77.83 mph (125.26 km/h) |
| 80 mph (128.75 km/h) | 83.02 mph (133.61 km/h) |
| 85 mph (136.79 km/h) | 88.21 mph (141.96 km/h) |
| 90 mph (144.84 km/h) | 93.4 mph (150.31 km/h) |
| 95 mph (152.89 km/h) | 98.59 mph (158.66 km/h) |
| 100 mph (160.93 km/h) | 103.78 mph (167.01 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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