Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/35-18 | 285/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.75 (628.7) | 25.85 (656.7) | 1.1 (28) 4.5% |
| Width inches (mm) | 9.65 (245) | 11.22 (285) | 1.57 (40) 16.3% |
| Circum. inches (mm) | 77.76 (1975.12) | 81.22 (2063.08) | 3.46 (87.96) 4.5% |
| Sidewall Height inches (mm) | 3.38 (85.75) | 3.93 (99.75) | 0.55 (14) 16.3% |
| Revolutions per mile (km) | 814.81 (506.3) | 780.07 (484.71) | -34.74 (-21.59) -4.3% |
285/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.89 mph (33.62 km/h) |
| 25 mph (40.23 km/h) | 26.11 mph (42.03 km/h) |
| 30 mph (48.28 km/h) | 31.34 mph (50.43 km/h) |
| 35 mph (56.33 km/h) | 36.56 mph (58.84 km/h) |
| 40 mph (64.37 km/h) | 41.78 mph (67.24 km/h) |
| 45 mph (72.42 km/h) | 47 mph (75.65 km/h) |
| 50 mph (80.47 km/h) | 52.23 mph (84.05 km/h) |
| 55 mph (88.51 km/h) | 57.45 mph (92.46 km/h) |
| 60 mph (96.56 km/h) | 62.67 mph (100.86 km/h) |
| 65 mph (104.61 km/h) | 67.89 mph (109.27 km/h) |
| 70 mph (112.65 km/h) | 73.12 mph (117.67 km/h) |
| 75 mph (120.7 km/h) | 78.34 mph (126.08 km/h) |
| 80 mph (128.75 km/h) | 83.56 mph (134.48 km/h) |
| 85 mph (136.79 km/h) | 88.79 mph (142.89 km/h) |
| 90 mph (144.84 km/h) | 94.01 mph (151.29 km/h) |
| 95 mph (152.89 km/h) | 99.23 mph (159.7 km/h) |
| 100 mph (160.93 km/h) | 104.45 mph (168.1 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 |
Better Fuel Economy Factory Ratios Increased Power
