Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-17 | 285/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.71 (830.8) | 31.46 (799.2) | -1.24 (-31.6) -3.8% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 102.76 (2610.04) | 98.85 (2510.76) | -3.91 (-99.27) -3.8% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 6.73 (171) | -1.12 (-28.5) -14.3% |
| Revolutions per mile (km) | 616.6 (383.14) | 640.98 (398.28) | 24.38 (15.15) 4% |
285/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.24 mph (30.96 km/h) |
| 25 mph (40.23 km/h) | 24.05 mph (38.7 km/h) |
| 30 mph (48.28 km/h) | 28.86 mph (46.44 km/h) |
| 35 mph (56.33 km/h) | 33.67 mph (54.18 km/h) |
| 40 mph (64.37 km/h) | 38.48 mph (61.93 km/h) |
| 45 mph (72.42 km/h) | 43.29 mph (69.67 km/h) |
| 50 mph (80.47 km/h) | 48.1 mph (77.41 km/h) |
| 55 mph (88.51 km/h) | 52.91 mph (85.15 km/h) |
| 60 mph (96.56 km/h) | 57.72 mph (92.89 km/h) |
| 65 mph (104.61 km/h) | 62.53 mph (100.63 km/h) |
| 70 mph (112.65 km/h) | 67.34 mph (108.37 km/h) |
| 75 mph (120.7 km/h) | 72.15 mph (116.11 km/h) |
| 80 mph (128.75 km/h) | 76.96 mph (123.85 km/h) |
| 85 mph (136.79 km/h) | 81.77 mph (131.59 km/h) |
| 90 mph (144.84 km/h) | 86.58 mph (139.33 km/h) |
| 95 mph (152.89 km/h) | 91.39 mph (147.07 km/h) |
| 100 mph (160.93 km/h) | 96.2 mph (154.81 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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