Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/50-20 | 265/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.04 (763) | 31.48 (799.5) | 1.44 (36.5) 4.8% |
| Width inches (mm) | 10.04 (255) | 10.43 (265) | 0.39 (10) 3.9% |
| Circum. inches (mm) | 94.37 (2397.04) | 98.89 (2511.7) | 4.51 (114.67) 4.8% |
| Sidewall Height inches (mm) | 5.02 (127.5) | 5.74 (145.75) | 0.72 (18.25) 14.3% |
| Revolutions per mile (km) | 671.39 (417.18) | 640.74 (398.14) | -30.65 (-19.05) -4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.96 mph (33.73 km/h) |
| 25 mph (40.23 km/h) | 26.2 mph (42.16 km/h) |
| 30 mph (48.28 km/h) | 31.44 mph (50.59 km/h) |
| 35 mph (56.33 km/h) | 36.67 mph (59.02 km/h) |
| 40 mph (64.37 km/h) | 41.91 mph (67.45 km/h) |
| 45 mph (72.42 km/h) | 47.15 mph (75.89 km/h) |
| 50 mph (80.47 km/h) | 52.39 mph (84.32 km/h) |
| 55 mph (88.51 km/h) | 57.63 mph (92.75 km/h) |
| 60 mph (96.56 km/h) | 62.87 mph (101.18 km/h) |
| 65 mph (104.61 km/h) | 68.11 mph (109.61 km/h) |
| 70 mph (112.65 km/h) | 73.35 mph (118.04 km/h) |
| 75 mph (120.7 km/h) | 78.59 mph (126.48 km/h) |
| 80 mph (128.75 km/h) | 83.83 mph (134.91 km/h) |
| 85 mph (136.79 km/h) | 89.07 mph (143.34 km/h) |
| 90 mph (144.84 km/h) | 94.31 mph (151.77 km/h) |
| 95 mph (152.89 km/h) | 99.54 mph (160.2 km/h) |
| 100 mph (160.93 km/h) | 104.78 mph (168.63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1631 | 1894 | 2040 | 2130 | 2227 | 2297 | 2373 | 2463 | 2588 | 2713 | 2852 | 2963 | 3164 | 3386 | 3559 | 3670 | 3733 | 3962 | 4281 | 4975 |
Better Fuel Economy Factory Ratios Increased Power
