Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/30-18 | 285/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.73 (628.2) | 25.85 (656.7) | 1.12 (28.5) 4.5% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 77.7 (1973.55) | 81.22 (2063.08) | 3.53 (89.54) 4.5% |
| Sidewall Height inches (mm) | 3.37 (85.5) | 3.93 (99.75) | 0.56 (14.25) 16.7% |
| Revolutions per mile (km) | 815.46 (506.7) | 780.07 (484.71) | -35.39 (-21.99) -4.3% |
285/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.91 mph (33.65 km/h) |
| 25 mph (40.23 km/h) | 26.13 mph (42.06 km/h) |
| 30 mph (48.28 km/h) | 31.36 mph (50.47 km/h) |
| 35 mph (56.33 km/h) | 36.59 mph (58.88 km/h) |
| 40 mph (64.37 km/h) | 41.81 mph (67.29 km/h) |
| 45 mph (72.42 km/h) | 47.04 mph (75.71 km/h) |
| 50 mph (80.47 km/h) | 52.27 mph (84.12 km/h) |
| 55 mph (88.51 km/h) | 57.5 mph (92.53 km/h) |
| 60 mph (96.56 km/h) | 62.72 mph (100.94 km/h) |
| 65 mph (104.61 km/h) | 67.95 mph (109.35 km/h) |
| 70 mph (112.65 km/h) | 73.18 mph (117.77 km/h) |
| 75 mph (120.7 km/h) | 78.4 mph (126.18 km/h) |
| 80 mph (128.75 km/h) | 83.63 mph (134.59 km/h) |
| 85 mph (136.79 km/h) | 88.86 mph (143 km/h) |
| 90 mph (144.84 km/h) | 94.08 mph (151.41 km/h) |
| 95 mph (152.89 km/h) | 99.31 mph (159.82 km/h) |
| 100 mph (160.93 km/h) | 104.54 mph (168.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | 2306 | 2484 | 2593 | 2712 | 2796 | 2889 | 2999 | 3151 | 3303 | 3472 | 3607 | 3852 | 4122 | 4333 | 4469 | 4545 | 4823 | 5212 | 6057 |
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