Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/40-17 | 285/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.35 (643.8) | 25.85 (656.7) | 0.51 (12.9) 2% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 79.63 (2022.56) | 81.22 (2063.08) | 1.6 (40.53) 2% |
| Sidewall Height inches (mm) | 4.17 (106) | 3.93 (99.75) | -0.25 (-6.25) -5.9% |
| Revolutions per mile (km) | 795.7 (494.42) | 780.07 (484.71) | -15.63 (-9.71) -2% |
285/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.4 mph (32.83 km/h) |
| 25 mph (40.23 km/h) | 25.5 mph (41.04 km/h) |
| 30 mph (48.28 km/h) | 30.6 mph (49.25 km/h) |
| 35 mph (56.33 km/h) | 35.7 mph (57.46 km/h) |
| 40 mph (64.37 km/h) | 40.8 mph (65.66 km/h) |
| 45 mph (72.42 km/h) | 45.9 mph (73.87 km/h) |
| 50 mph (80.47 km/h) | 51 mph (82.08 km/h) |
| 55 mph (88.51 km/h) | 56.1 mph (90.29 km/h) |
| 60 mph (96.56 km/h) | 61.2 mph (98.5 km/h) |
| 65 mph (104.61 km/h) | 66.3 mph (106.7 km/h) |
| 70 mph (112.65 km/h) | 71.4 mph (114.91 km/h) |
| 75 mph (120.7 km/h) | 76.5 mph (123.12 km/h) |
| 80 mph (128.75 km/h) | 81.6 mph (131.33 km/h) |
| 85 mph (136.79 km/h) | 86.7 mph (139.54 km/h) |
| 90 mph (144.84 km/h) | 91.8 mph (147.74 km/h) |
| 95 mph (152.89 km/h) | 96.9 mph (155.95 km/h) |
| 100 mph (160.93 km/h) | 102 mph (164.16 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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