Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 30.43 (773) | 0.74 (18.8) 2.5% |
| Width inches (mm) | 6.5 (165) | 10.43 (265) | 3.94 (100) 60.6% |
| Circum. inches (mm) | 93.28 (2369.39) | 95.61 (2428.45) | 2.33 (59.06) 2.5% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 5.22 (132.5) | -0.63 (-16) -10.8% |
| Revolutions per mile (km) | 679.22 (422.05) | 662.7 (411.78) | -16.52 (-10.26) -2.4% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.5 mph (32.99 km/h) |
| 25 mph (40.23 km/h) | 25.62 mph (41.24 km/h) |
| 30 mph (48.28 km/h) | 30.75 mph (49.48 km/h) |
| 35 mph (56.33 km/h) | 35.87 mph (57.73 km/h) |
| 40 mph (64.37 km/h) | 41 mph (65.98 km/h) |
| 45 mph (72.42 km/h) | 46.12 mph (74.23 km/h) |
| 50 mph (80.47 km/h) | 51.25 mph (82.47 km/h) |
| 55 mph (88.51 km/h) | 56.37 mph (90.72 km/h) |
| 60 mph (96.56 km/h) | 61.5 mph (98.97 km/h) |
| 65 mph (104.61 km/h) | 66.62 mph (107.22 km/h) |
| 70 mph (112.65 km/h) | 71.74 mph (115.46 km/h) |
| 75 mph (120.7 km/h) | 76.87 mph (123.71 km/h) |
| 80 mph (128.75 km/h) | 81.99 mph (131.96 km/h) |
| 85 mph (136.79 km/h) | 87.12 mph (140.2 km/h) |
| 90 mph (144.84 km/h) | 92.24 mph (148.45 km/h) |
| 95 mph (152.89 km/h) | 97.37 mph (156.7 km/h) |
| 100 mph (160.93 km/h) | 102.49 mph (164.95 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
