Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/70-18 | 285/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 33.71 (856.2) | 1.1 (28) 3.4% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 102.44 (2601.87) | 105.9 (2689.83) | 3.46 (87.96) 3.4% |
| Sidewall Height inches (mm) | 7.3 (185.5) | 7.85 (199.5) | 0.55 (14) 7.5% |
| Revolutions per mile (km) | 618.53 (384.34) | 598.31 (371.77) | -20.23 (-12.57) -3.3% |
285/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.28 km/h) |
| 25 mph (40.23 km/h) | 25.85 mph (41.59 km/h) |
| 30 mph (48.28 km/h) | 31.01 mph (49.91 km/h) |
| 35 mph (56.33 km/h) | 36.18 mph (58.23 km/h) |
| 40 mph (64.37 km/h) | 41.35 mph (66.55 km/h) |
| 45 mph (72.42 km/h) | 46.52 mph (74.87 km/h) |
| 50 mph (80.47 km/h) | 51.69 mph (83.19 km/h) |
| 55 mph (88.51 km/h) | 56.86 mph (91.51 km/h) |
| 60 mph (96.56 km/h) | 62.03 mph (99.83 km/h) |
| 65 mph (104.61 km/h) | 67.2 mph (108.14 km/h) |
| 70 mph (112.65 km/h) | 72.37 mph (116.46 km/h) |
| 75 mph (120.7 km/h) | 77.54 mph (124.78 km/h) |
| 80 mph (128.75 km/h) | 82.7 mph (133.1 km/h) |
| 85 mph (136.79 km/h) | 87.87 mph (141.42 km/h) |
| 90 mph (144.84 km/h) | 93.04 mph (149.74 km/h) |
| 95 mph (152.89 km/h) | 98.21 mph (158.06 km/h) |
| 100 mph (160.93 km/h) | 103.38 mph (166.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1523 | 1769 | 1905 | 1989 | 2080 | 2145 | 2216 | 2300 | 2417 | 2533 | 2663 | 2767 | 2954 | 3162 | 3324 | 3427 | 3486 | 3700 | 3998 | 4645 |
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