Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 30.43 (773) | 4.78 (121.4) 18.6% |
| Width inches (mm) | 6.5 (165) | 10.43 (265) | 3.94 (100) 60.6% |
| Circum. inches (mm) | 80.59 (2047.06) | 95.61 (2428.45) | 15.02 (381.39) 18.6% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 5.22 (132.5) | -0.11 (-2.8) -2.1% |
| Revolutions per mile (km) | 786.17 (488.5) | 662.7 (411.78) | -123.47 (-76.72) -15.7% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.73 mph (38.18 km/h) |
| 25 mph (40.23 km/h) | 29.66 mph (47.73 km/h) |
| 30 mph (48.28 km/h) | 35.59 mph (57.28 km/h) |
| 35 mph (56.33 km/h) | 41.52 mph (66.82 km/h) |
| 40 mph (64.37 km/h) | 47.45 mph (76.37 km/h) |
| 45 mph (72.42 km/h) | 53.38 mph (85.91 km/h) |
| 50 mph (80.47 km/h) | 59.32 mph (95.46 km/h) |
| 55 mph (88.51 km/h) | 65.25 mph (105.01 km/h) |
| 60 mph (96.56 km/h) | 71.18 mph (114.55 km/h) |
| 65 mph (104.61 km/h) | 77.11 mph (124.1 km/h) |
| 70 mph (112.65 km/h) | 83.04 mph (133.64 km/h) |
| 75 mph (120.7 km/h) | 88.97 mph (143.19 km/h) |
| 80 mph (128.75 km/h) | 94.9 mph (152.73 km/h) |
| 85 mph (136.79 km/h) | 100.84 mph (162.28 km/h) |
| 90 mph (144.84 km/h) | 106.77 mph (171.83 km/h) |
| 95 mph (152.89 km/h) | 112.7 mph (181.37 km/h) |
| 100 mph (160.93 km/h) | 118.63 mph (190.92 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
