Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/65-18 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.54 (775.7) | 30.43 (773) | -0.11 (-2.7) -0.3% |
| Width inches (mm) | 9.65 (245) | 10.43 (265) | 0.79 (20) 8.2% |
| Circum. inches (mm) | 95.94 (2436.93) | 95.61 (2428.45) | -0.33 (-8.48) -0.3% |
| Sidewall Height inches (mm) | 6.27 (159.25) | 5.22 (132.5) | -1.05 (-26.75) -16.8% |
| Revolutions per mile (km) | 660.4 (410.35) | 662.7 (411.78) | 2.31 (1.43) 0.3% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.93 mph (32.07 km/h) |
| 25 mph (40.23 km/h) | 24.91 mph (40.09 km/h) |
| 30 mph (48.28 km/h) | 29.9 mph (48.11 km/h) |
| 35 mph (56.33 km/h) | 34.88 mph (56.13 km/h) |
| 40 mph (64.37 km/h) | 39.86 mph (64.15 km/h) |
| 45 mph (72.42 km/h) | 44.84 mph (72.17 km/h) |
| 50 mph (80.47 km/h) | 49.83 mph (80.19 km/h) |
| 55 mph (88.51 km/h) | 54.81 mph (88.21 km/h) |
| 60 mph (96.56 km/h) | 59.79 mph (96.22 km/h) |
| 65 mph (104.61 km/h) | 64.77 mph (104.24 km/h) |
| 70 mph (112.65 km/h) | 69.76 mph (112.26 km/h) |
| 75 mph (120.7 km/h) | 74.74 mph (120.28 km/h) |
| 80 mph (128.75 km/h) | 79.72 mph (128.3 km/h) |
| 85 mph (136.79 km/h) | 84.7 mph (136.32 km/h) |
| 90 mph (144.84 km/h) | 89.69 mph (144.34 km/h) |
| 95 mph (152.89 km/h) | 94.67 mph (152.36 km/h) |
| 100 mph (160.93 km/h) | 99.65 mph (160.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1686 | 1959 | 2110 | 2203 | 2304 | 2375 | 2454 | 2548 | 2677 | 2806 | 2950 | 3064 | 3272 | 3502 | 3681 | 3796 | 3861 | 4098 | 4428 | 5145 |
Better Fuel Economy Factory Ratios Increased Power
