Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/30-20 | 275/25-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673) | 25.41 (645.5) | -1.08 (-27.5) -4.1% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 83.24 (2114.29) | 79.84 (2027.9) | -3.4 (-86.39) -4.1% |
| Sidewall Height inches (mm) | 3.25 (82.5) | 2.71 (68.75) | -0.54 (-13.75) -16.7% |
| Revolutions per mile (km) | 761.17 (472.97) | 793.6 (493.12) | 32.43 (20.15) 4.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.18 mph (30.87 km/h) |
| 25 mph (40.23 km/h) | 23.98 mph (38.59 km/h) |
| 30 mph (48.28 km/h) | 28.77 mph (46.31 km/h) |
| 35 mph (56.33 km/h) | 33.57 mph (54.03 km/h) |
| 40 mph (64.37 km/h) | 38.37 mph (61.74 km/h) |
| 45 mph (72.42 km/h) | 43.16 mph (69.46 km/h) |
| 50 mph (80.47 km/h) | 47.96 mph (77.18 km/h) |
| 55 mph (88.51 km/h) | 52.75 mph (84.9 km/h) |
| 60 mph (96.56 km/h) | 57.55 mph (92.62 km/h) |
| 65 mph (104.61 km/h) | 62.34 mph (100.33 km/h) |
| 70 mph (112.65 km/h) | 67.14 mph (108.05 km/h) |
| 75 mph (120.7 km/h) | 71.94 mph (115.77 km/h) |
| 80 mph (128.75 km/h) | 76.73 mph (123.49 km/h) |
| 85 mph (136.79 km/h) | 81.53 mph (131.2 km/h) |
| 90 mph (144.84 km/h) | 86.32 mph (138.92 km/h) |
| 95 mph (152.89 km/h) | 91.12 mph (146.64 km/h) |
| 100 mph (160.93 km/h) | 95.91 mph (154.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 2346 | 2527 | 2638 | 2759 | 2845 | 2939 | 3051 | 3206 | 3360 | 3532 | 3670 | 3919 | 4194 | 4409 | 4546 | 4624 | 4907 | 5302 | 6162 |
Better Fuel Economy Factory Ratios Increased Power
