Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/45-20 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.68 (728.5) | 30.43 (773) | 1.75 (44.5) 6.1% |
| Width inches (mm) | 9.65 (245) | 10.43 (265) | 0.79 (20) 8.2% |
| Circum. inches (mm) | 90.1 (2288.65) | 95.61 (2428.45) | 5.5 (139.8) 6.1% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 5.22 (132.5) | 0.88 (22.25) 20.2% |
| Revolutions per mile (km) | 703.18 (436.94) | 662.7 (411.78) | -40.48 (-25.15) -5.8% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.22 mph (34.15 km/h) |
| 25 mph (40.23 km/h) | 26.53 mph (42.69 km/h) |
| 30 mph (48.28 km/h) | 31.83 mph (51.23 km/h) |
| 35 mph (56.33 km/h) | 37.14 mph (59.77 km/h) |
| 40 mph (64.37 km/h) | 42.44 mph (68.31 km/h) |
| 45 mph (72.42 km/h) | 47.75 mph (76.84 km/h) |
| 50 mph (80.47 km/h) | 53.05 mph (85.38 km/h) |
| 55 mph (88.51 km/h) | 58.36 mph (93.92 km/h) |
| 60 mph (96.56 km/h) | 63.67 mph (102.46 km/h) |
| 65 mph (104.61 km/h) | 68.97 mph (111 km/h) |
| 70 mph (112.65 km/h) | 74.28 mph (119.54 km/h) |
| 75 mph (120.7 km/h) | 79.58 mph (128.07 km/h) |
| 80 mph (128.75 km/h) | 84.89 mph (136.61 km/h) |
| 85 mph (136.79 km/h) | 90.19 mph (145.15 km/h) |
| 90 mph (144.84 km/h) | 95.5 mph (153.69 km/h) |
| 95 mph (152.89 km/h) | 100.8 mph (162.23 km/h) |
| 100 mph (160.93 km/h) | 106.11 mph (170.77 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
