Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/85-18 | 265/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.07 (941.7) | 32.61 (828.2) | -4.47 (-113.5) -12.1% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 116.47 (2958.44) | 102.44 (2601.87) | -14.04 (-356.57) -12.1% |
| Sidewall Height inches (mm) | 9.54 (242.25) | 7.3 (185.5) | -2.23 (-56.75) -23.4% |
| Revolutions per mile (km) | 543.98 (338.02) | 618.53 (384.34) | 74.55 (46.32) 13.7% |
265/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.59 mph (28.31 km/h) |
| 25 mph (40.23 km/h) | 21.99 mph (35.38 km/h) |
| 30 mph (48.28 km/h) | 26.38 mph (42.46 km/h) |
| 35 mph (56.33 km/h) | 30.78 mph (49.54 km/h) |
| 40 mph (64.37 km/h) | 35.18 mph (56.62 km/h) |
| 45 mph (72.42 km/h) | 39.58 mph (63.69 km/h) |
| 50 mph (80.47 km/h) | 43.97 mph (70.77 km/h) |
| 55 mph (88.51 km/h) | 48.37 mph (77.85 km/h) |
| 60 mph (96.56 km/h) | 52.77 mph (84.92 km/h) |
| 65 mph (104.61 km/h) | 57.17 mph (92 km/h) |
| 70 mph (112.65 km/h) | 61.56 mph (99.08 km/h) |
| 75 mph (120.7 km/h) | 65.96 mph (106.15 km/h) |
| 80 mph (128.75 km/h) | 70.36 mph (113.23 km/h) |
| 85 mph (136.79 km/h) | 74.76 mph (120.31 km/h) |
| 90 mph (144.84 km/h) | 79.15 mph (127.38 km/h) |
| 95 mph (152.89 km/h) | 83.55 mph (134.46 km/h) |
| 100 mph (160.93 km/h) | 87.95 mph (141.54 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1574 | 1829 | 1969 | 2056 | 2150 | 2217 | 2291 | 2378 | 2498 | 2619 | 2753 | 2860 | 3054 | 3269 | 3436 | 3543 | 3604 | 3825 | 4133 | 4803 |
Better Fuel Economy Factory Ratios Increased Power
