Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/75-18 | 275/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.83 (884.7) | 34.24 (869.7) | -0.59 (-15) -1.7% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 109.42 (2779.37) | 107.57 (2732.24) | -1.86 (-47.12) -1.7% |
| Sidewall Height inches (mm) | 8.42 (213.75) | 8.12 (206.25) | -0.3 (-7.5) -3.5% |
| Revolutions per mile (km) | 579.03 (359.79) | 589.02 (366) | 9.99 (6.21) 1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.66 mph (31.64 km/h) |
| 25 mph (40.23 km/h) | 24.58 mph (39.55 km/h) |
| 30 mph (48.28 km/h) | 29.49 mph (47.46 km/h) |
| 35 mph (56.33 km/h) | 34.41 mph (55.37 km/h) |
| 40 mph (64.37 km/h) | 39.32 mph (63.28 km/h) |
| 45 mph (72.42 km/h) | 44.24 mph (71.19 km/h) |
| 50 mph (80.47 km/h) | 49.15 mph (79.1 km/h) |
| 55 mph (88.51 km/h) | 54.07 mph (87.01 km/h) |
| 60 mph (96.56 km/h) | 58.98 mph (94.92 km/h) |
| 65 mph (104.61 km/h) | 63.9 mph (102.83 km/h) |
| 70 mph (112.65 km/h) | 68.81 mph (110.74 km/h) |
| 75 mph (120.7 km/h) | 73.73 mph (118.65 km/h) |
| 80 mph (128.75 km/h) | 78.64 mph (126.56 km/h) |
| 85 mph (136.79 km/h) | 83.56 mph (134.48 km/h) |
| 90 mph (144.84 km/h) | 88.47 mph (142.39 km/h) |
| 95 mph (152.89 km/h) | 93.39 mph (150.3 km/h) |
| 100 mph (160.93 km/h) | 98.3 mph (158.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1499 | 1741 | 1875 | 1958 | 2047 | 2111 | 2181 | 2264 | 2379 | 2494 | 2622 | 2724 | 2909 | 3113 | 3272 | 3374 | 3432 | 3642 | 3936 | 4573 |
Better Fuel Economy Factory Ratios Increased Power
