Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/70-18 | 305/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 34.81 (884.2) | 2.2 (56) 6.8% |
| Width inches (mm) | 10.43 (265) | 12.01 (305) | 1.57 (40) 15.1% |
| Circum. inches (mm) | 102.44 (2601.87) | 109.36 (2777.8) | 6.93 (175.93) 6.8% |
| Sidewall Height inches (mm) | 7.3 (185.5) | 8.41 (213.5) | 1.1 (28) 15.1% |
| Revolutions per mile (km) | 618.53 (384.34) | 579.36 (360) | -39.17 (-24.34) -6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.35 mph (34.36 km/h) |
| 25 mph (40.23 km/h) | 26.69 mph (42.95 km/h) |
| 30 mph (48.28 km/h) | 32.03 mph (51.54 km/h) |
| 35 mph (56.33 km/h) | 37.37 mph (60.14 km/h) |
| 40 mph (64.37 km/h) | 42.7 mph (68.73 km/h) |
| 45 mph (72.42 km/h) | 48.04 mph (77.32 km/h) |
| 50 mph (80.47 km/h) | 53.38 mph (85.91 km/h) |
| 55 mph (88.51 km/h) | 58.72 mph (94.5 km/h) |
| 60 mph (96.56 km/h) | 64.06 mph (103.09 km/h) |
| 65 mph (104.61 km/h) | 69.4 mph (111.68 km/h) |
| 70 mph (112.65 km/h) | 74.73 mph (120.27 km/h) |
| 75 mph (120.7 km/h) | 80.07 mph (128.86 km/h) |
| 80 mph (128.75 km/h) | 85.41 mph (137.45 km/h) |
| 85 mph (136.79 km/h) | 90.75 mph (146.04 km/h) |
| 90 mph (144.84 km/h) | 96.09 mph (154.63 km/h) |
| 95 mph (152.89 km/h) | 101.42 mph (163.23 km/h) |
| 100 mph (160.93 km/h) | 106.76 mph (171.82 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
