Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/75-18 | 305/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.65 (854.7) | 34.81 (884.2) | 1.16 (29.5) 3.5% |
| Width inches (mm) | 10.43 (265) | 12.01 (305) | 1.57 (40) 15.1% |
| Circum. inches (mm) | 105.71 (2685.12) | 109.36 (2777.8) | 3.65 (92.68) 3.5% |
| Sidewall Height inches (mm) | 7.82 (198.75) | 8.41 (213.5) | 0.58 (14.75) 7.4% |
| Revolutions per mile (km) | 599.36 (372.42) | 579.36 (360) | -20 (-12.43) -3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.69 mph (33.3 km/h) |
| 25 mph (40.23 km/h) | 25.86 mph (41.62 km/h) |
| 30 mph (48.28 km/h) | 31.04 mph (49.95 km/h) |
| 35 mph (56.33 km/h) | 36.21 mph (58.27 km/h) |
| 40 mph (64.37 km/h) | 41.38 mph (66.6 km/h) |
| 45 mph (72.42 km/h) | 46.55 mph (74.92 km/h) |
| 50 mph (80.47 km/h) | 51.73 mph (83.24 km/h) |
| 55 mph (88.51 km/h) | 56.9 mph (91.57 km/h) |
| 60 mph (96.56 km/h) | 62.07 mph (99.89 km/h) |
| 65 mph (104.61 km/h) | 67.24 mph (108.22 km/h) |
| 70 mph (112.65 km/h) | 72.42 mph (116.54 km/h) |
| 75 mph (120.7 km/h) | 77.59 mph (124.87 km/h) |
| 80 mph (128.75 km/h) | 82.76 mph (133.19 km/h) |
| 85 mph (136.79 km/h) | 87.93 mph (141.52 km/h) |
| 90 mph (144.84 km/h) | 93.11 mph (149.84 km/h) |
| 95 mph (152.89 km/h) | 98.28 mph (158.16 km/h) |
| 100 mph (160.93 km/h) | 103.45 mph (166.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1474 | 1713 | 1845 | 1926 | 2014 | 2077 | 2146 | 2227 | 2340 | 2453 | 2579 | 2679 | 2861 | 3062 | 3218 | 3319 | 3375 | 3582 | 3871 | 4498 |
Better Fuel Economy Factory Ratios Increased Power
