Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/50-18 | 285/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.22 (742.2) | 31.46 (799.2) | 2.24 (57) 7.7% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 91.8 (2331.69) | 98.85 (2510.76) | 7.05 (179.07) 7.7% |
| Sidewall Height inches (mm) | 5.61 (142.5) | 6.73 (171) | 1.12 (28.5) 20% |
| Revolutions per mile (km) | 690.2 (428.87) | 640.98 (398.28) | -49.23 (-30.59) -7.1% |
285/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.54 mph (34.66 km/h) |
| 25 mph (40.23 km/h) | 26.92 mph (43.32 km/h) |
| 30 mph (48.28 km/h) | 32.3 mph (51.99 km/h) |
| 35 mph (56.33 km/h) | 37.69 mph (60.65 km/h) |
| 40 mph (64.37 km/h) | 43.07 mph (69.32 km/h) |
| 45 mph (72.42 km/h) | 48.46 mph (77.98 km/h) |
| 50 mph (80.47 km/h) | 53.84 mph (86.65 km/h) |
| 55 mph (88.51 km/h) | 59.22 mph (95.31 km/h) |
| 60 mph (96.56 km/h) | 64.61 mph (103.98 km/h) |
| 65 mph (104.61 km/h) | 69.99 mph (112.64 km/h) |
| 70 mph (112.65 km/h) | 75.38 mph (121.31 km/h) |
| 75 mph (120.7 km/h) | 80.76 mph (129.97 km/h) |
| 80 mph (128.75 km/h) | 86.14 mph (138.64 km/h) |
| 85 mph (136.79 km/h) | 91.53 mph (147.3 km/h) |
| 90 mph (144.84 km/h) | 96.91 mph (155.96 km/h) |
| 95 mph (152.89 km/h) | 102.3 mph (164.63 km/h) |
| 100 mph (160.93 km/h) | 107.68 mph (173.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1631 | 1895 | 2041 | 2131 | 2228 | 2298 | 2374 | 2464 | 2589 | 2714 | 2853 | 2964 | 3165 | 3387 | 3561 | 3672 | 3734 | 3963 | 4283 | 4977 |
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