Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/45-18 | 285/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.1 (713.7) | 25.85 (656.7) | -2.24 (-57) -8% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 88.27 (2242.15) | 81.22 (2063.08) | -7.05 (-179.07) -8% |
| Sidewall Height inches (mm) | 5.05 (128.25) | 3.93 (99.75) | -1.12 (-28.5) -22.2% |
| Revolutions per mile (km) | 717.77 (446) | 780.07 (484.71) | 62.3 (38.71) 8.7% |
285/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.4 mph (29.62 km/h) |
| 25 mph (40.23 km/h) | 23 mph (37.02 km/h) |
| 30 mph (48.28 km/h) | 27.6 mph (44.42 km/h) |
| 35 mph (56.33 km/h) | 32.2 mph (51.83 km/h) |
| 40 mph (64.37 km/h) | 36.81 mph (59.23 km/h) |
| 45 mph (72.42 km/h) | 41.41 mph (66.64 km/h) |
| 50 mph (80.47 km/h) | 46.01 mph (74.04 km/h) |
| 55 mph (88.51 km/h) | 50.61 mph (81.44 km/h) |
| 60 mph (96.56 km/h) | 55.21 mph (88.85 km/h) |
| 65 mph (104.61 km/h) | 59.81 mph (96.25 km/h) |
| 70 mph (112.65 km/h) | 64.41 mph (103.66 km/h) |
| 75 mph (120.7 km/h) | 69.01 mph (111.06 km/h) |
| 80 mph (128.75 km/h) | 73.61 mph (118.47 km/h) |
| 85 mph (136.79 km/h) | 78.21 mph (125.87 km/h) |
| 90 mph (144.84 km/h) | 82.81 mph (133.27 km/h) |
| 95 mph (152.89 km/h) | 87.41 mph (140.68 km/h) |
| 100 mph (160.93 km/h) | 92.01 mph (148.08 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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