Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-21 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.91 (835.9) | 30.43 (773) | -2.48 (-62.9) -7.5% |
| Width inches (mm) | 10.83 (275) | 10.43 (265) | -0.39 (-10) -3.6% |
| Circum. inches (mm) | 103.39 (2626.06) | 95.61 (2428.45) | -7.78 (-197.61) -7.5% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 5.22 (132.5) | -0.74 (-18.75) -12.4% |
| Revolutions per mile (km) | 612.84 (380.8) | 662.7 (411.78) | 49.87 (30.99) 8.1% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.5 mph (29.76 km/h) |
| 25 mph (40.23 km/h) | 23.12 mph (37.21 km/h) |
| 30 mph (48.28 km/h) | 27.74 mph (44.65 km/h) |
| 35 mph (56.33 km/h) | 32.37 mph (52.09 km/h) |
| 40 mph (64.37 km/h) | 36.99 mph (59.53 km/h) |
| 45 mph (72.42 km/h) | 41.61 mph (66.97 km/h) |
| 50 mph (80.47 km/h) | 46.24 mph (74.41 km/h) |
| 55 mph (88.51 km/h) | 50.86 mph (81.85 km/h) |
| 60 mph (96.56 km/h) | 55.49 mph (89.29 km/h) |
| 65 mph (104.61 km/h) | 60.11 mph (96.74 km/h) |
| 70 mph (112.65 km/h) | 64.73 mph (104.18 km/h) |
| 75 mph (120.7 km/h) | 69.36 mph (111.62 km/h) |
| 80 mph (128.75 km/h) | 73.98 mph (119.06 km/h) |
| 85 mph (136.79 km/h) | 78.6 mph (126.5 km/h) |
| 90 mph (144.84 km/h) | 83.23 mph (133.94 km/h) |
| 95 mph (152.89 km/h) | 87.85 mph (141.38 km/h) |
| 100 mph (160.93 km/h) | 92.48 mph (148.82 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
