Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/45-18 | 255/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.39 (695.7) | 27.04 (686.7) | -0.35 (-9) -1.3% |
| Width inches (mm) | 10.43 (265) | 10.04 (255) | -0.39 (-10) -3.8% |
| Circum. inches (mm) | 86.05 (2185.61) | 84.93 (2157.33) | -1.11 (-28.27) -1.3% |
| Sidewall Height inches (mm) | 4.69 (119.25) | 4.52 (114.75) | -0.18 (-4.5) -3.8% |
| Revolutions per mile (km) | 736.34 (457.54) | 745.99 (463.53) | 9.65 (6) 1.3% |
255/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.74 mph (31.77 km/h) |
| 25 mph (40.23 km/h) | 24.68 mph (39.71 km/h) |
| 30 mph (48.28 km/h) | 29.61 mph (47.66 km/h) |
| 35 mph (56.33 km/h) | 34.55 mph (55.6 km/h) |
| 40 mph (64.37 km/h) | 39.48 mph (63.54 km/h) |
| 45 mph (72.42 km/h) | 44.42 mph (71.48 km/h) |
| 50 mph (80.47 km/h) | 49.35 mph (79.43 km/h) |
| 55 mph (88.51 km/h) | 54.29 mph (87.37 km/h) |
| 60 mph (96.56 km/h) | 59.22 mph (95.31 km/h) |
| 65 mph (104.61 km/h) | 64.16 mph (103.25 km/h) |
| 70 mph (112.65 km/h) | 69.09 mph (111.2 km/h) |
| 75 mph (120.7 km/h) | 74.03 mph (119.14 km/h) |
| 80 mph (128.75 km/h) | 78.97 mph (127.08 km/h) |
| 85 mph (136.79 km/h) | 83.9 mph (135.02 km/h) |
| 90 mph (144.84 km/h) | 88.84 mph (142.97 km/h) |
| 95 mph (152.89 km/h) | 93.77 mph (150.91 km/h) |
| 100 mph (160.93 km/h) | 98.71 mph (158.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1898 | 2205 | 2375 | 2480 | 2593 | 2674 | 2763 | 2868 | 3013 | 3159 | 3320 | 3449 | 3684 | 3942 | 4144 | 4273 | 4346 | 4613 | 4984 | 5792 |
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