Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/50-18 | 255/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.22 (742.2) | 30.05 (763.2) | 0.83 (21) 2.8% |
| Width inches (mm) | 11.22 (285) | 10.04 (255) | -1.18 (-30) -10.5% |
| Circum. inches (mm) | 91.8 (2331.69) | 94.4 (2397.66) | 2.6 (65.97) 2.8% |
| Sidewall Height inches (mm) | 5.61 (142.5) | 6.02 (153) | 0.41 (10.5) 7.4% |
| Revolutions per mile (km) | 690.2 (428.87) | 671.21 (417.07) | -18.99 (-11.8) -2.8% |
255/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.1 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.37 km/h) |
| 30 mph (48.28 km/h) | 30.85 mph (49.65 km/h) |
| 35 mph (56.33 km/h) | 35.99 mph (57.92 km/h) |
| 40 mph (64.37 km/h) | 41.13 mph (66.2 km/h) |
| 45 mph (72.42 km/h) | 46.27 mph (74.47 km/h) |
| 50 mph (80.47 km/h) | 51.41 mph (82.74 km/h) |
| 55 mph (88.51 km/h) | 56.56 mph (91.02 km/h) |
| 60 mph (96.56 km/h) | 61.7 mph (99.29 km/h) |
| 65 mph (104.61 km/h) | 66.84 mph (107.57 km/h) |
| 70 mph (112.65 km/h) | 71.98 mph (115.84 km/h) |
| 75 mph (120.7 km/h) | 77.12 mph (124.12 km/h) |
| 80 mph (128.75 km/h) | 82.26 mph (132.39 km/h) |
| 85 mph (136.79 km/h) | 87.41 mph (140.67 km/h) |
| 90 mph (144.84 km/h) | 92.55 mph (148.94 km/h) |
| 95 mph (152.89 km/h) | 97.69 mph (157.21 km/h) |
| 100 mph (160.93 km/h) | 102.83 mph (165.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1708 | 1984 | 2137 | 2231 | 2333 | 2406 | 2486 | 2580 | 2711 | 2842 | 2987 | 3104 | 3314 | 3547 | 3729 | 3845 | 3910 | 4150 | 4485 | 5212 |
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