Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/80-15 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.87 (581) | 30.43 (773) | 7.56 (192) 33% |
| Width inches (mm) | 4.92 (125) | 10.43 (265) | 5.51 (140) 112% |
| Circum. inches (mm) | 71.86 (1825.27) | 95.61 (2428.45) | 23.75 (603.19) 33% |
| Sidewall Height inches (mm) | 3.94 (100) | 5.22 (132.5) | 1.28 (32.5) 32.5% |
| Revolutions per mile (km) | 881.7 (547.86) | 662.7 (411.78) | -219 (-136.08) -24.8% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.61 mph (42.82 km/h) |
| 25 mph (40.23 km/h) | 33.26 mph (53.53 km/h) |
| 30 mph (48.28 km/h) | 39.91 mph (64.24 km/h) |
| 35 mph (56.33 km/h) | 46.57 mph (74.94 km/h) |
| 40 mph (64.37 km/h) | 53.22 mph (85.65 km/h) |
| 45 mph (72.42 km/h) | 59.87 mph (96.35 km/h) |
| 50 mph (80.47 km/h) | 66.52 mph (107.06 km/h) |
| 55 mph (88.51 km/h) | 73.18 mph (117.76 km/h) |
| 60 mph (96.56 km/h) | 79.83 mph (128.47 km/h) |
| 65 mph (104.61 km/h) | 86.48 mph (139.18 km/h) |
| 70 mph (112.65 km/h) | 93.13 mph (149.88 km/h) |
| 75 mph (120.7 km/h) | 99.78 mph (160.59 km/h) |
| 80 mph (128.75 km/h) | 106.44 mph (171.29 km/h) |
| 85 mph (136.79 km/h) | 113.09 mph (182 km/h) |
| 90 mph (144.84 km/h) | 119.74 mph (192.71 km/h) |
| 95 mph (152.89 km/h) | 126.39 mph (203.41 km/h) |
| 100 mph (160.93 km/h) | 133.05 mph (214.12 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
