Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-18 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.32 (643.2) | 30.43 (773) | 5.11 (129.8) 20.2% |
| Width inches (mm) | 6.1 (155) | 10.43 (265) | 4.33 (110) 71% |
| Circum. inches (mm) | 79.55 (2020.67) | 95.61 (2428.45) | 16.05 (407.78) 20.2% |
| Sidewall Height inches (mm) | 3.66 (93) | 5.22 (132.5) | 1.56 (39.5) 42.5% |
| Revolutions per mile (km) | 796.44 (494.88) | 662.7 (411.78) | -133.74 (-83.1) -16.8% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.04 mph (38.68 km/h) |
| 25 mph (40.23 km/h) | 30.05 mph (48.35 km/h) |
| 30 mph (48.28 km/h) | 36.05 mph (58.02 km/h) |
| 35 mph (56.33 km/h) | 42.06 mph (67.69 km/h) |
| 40 mph (64.37 km/h) | 48.07 mph (77.36 km/h) |
| 45 mph (72.42 km/h) | 54.08 mph (87.04 km/h) |
| 50 mph (80.47 km/h) | 60.09 mph (96.71 km/h) |
| 55 mph (88.51 km/h) | 66.1 mph (106.38 km/h) |
| 60 mph (96.56 km/h) | 72.11 mph (116.05 km/h) |
| 65 mph (104.61 km/h) | 78.12 mph (125.72 km/h) |
| 70 mph (112.65 km/h) | 84.13 mph (135.39 km/h) |
| 75 mph (120.7 km/h) | 90.14 mph (145.06 km/h) |
| 80 mph (128.75 km/h) | 96.14 mph (154.73 km/h) |
| 85 mph (136.79 km/h) | 102.15 mph (164.4 km/h) |
| 90 mph (144.84 km/h) | 108.16 mph (174.07 km/h) |
| 95 mph (152.89 km/h) | 114.17 mph (183.74 km/h) |
| 100 mph (160.93 km/h) | 120.18 mph (193.41 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
