Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-18 | 215/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.97 (659.7) | 25.62 (650.7) | -0.35 (-9) -1.4% |
| Width inches (mm) | 8.86 (225) | 8.46 (215) | -0.39 (-10) -4.4% |
| Circum. inches (mm) | 81.59 (2072.51) | 80.48 (2044.23) | -1.11 (-28.27) -1.4% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 3.81 (96.75) | -0.18 (-4.5) -4.4% |
| Revolutions per mile (km) | 776.52 (482.51) | 787.26 (489.18) | 10.74 (6.67) 1.4% |
215/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.73 mph (31.75 km/h) |
| 25 mph (40.23 km/h) | 24.66 mph (39.68 km/h) |
| 30 mph (48.28 km/h) | 29.59 mph (47.62 km/h) |
| 35 mph (56.33 km/h) | 34.52 mph (55.56 km/h) |
| 40 mph (64.37 km/h) | 39.45 mph (63.5 km/h) |
| 45 mph (72.42 km/h) | 44.39 mph (71.43 km/h) |
| 50 mph (80.47 km/h) | 49.32 mph (79.37 km/h) |
| 55 mph (88.51 km/h) | 54.25 mph (87.31 km/h) |
| 60 mph (96.56 km/h) | 59.18 mph (95.24 km/h) |
| 65 mph (104.61 km/h) | 64.11 mph (103.18 km/h) |
| 70 mph (112.65 km/h) | 69.05 mph (111.12 km/h) |
| 75 mph (120.7 km/h) | 73.98 mph (119.05 km/h) |
| 80 mph (128.75 km/h) | 78.91 mph (126.99 km/h) |
| 85 mph (136.79 km/h) | 83.84 mph (134.93 km/h) |
| 90 mph (144.84 km/h) | 88.77 mph (142.87 km/h) |
| 95 mph (152.89 km/h) | 93.7 mph (150.8 km/h) |
| 100 mph (160.93 km/h) | 98.64 mph (158.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | 2327 | 2506 | 2617 | 2737 | 2822 | 2916 | 3026 | 3180 | 3333 | 3504 | 3640 | 3887 | 4160 | 4373 | 4510 | 4587 | 4868 | 5260 | 6113 |
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