Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 300/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 30.63 (778) | 5.22 (132.5) 20.5% |
| Width inches (mm) | 10.83 (275) | 11.81 (300) | 0.98 (25) 9.1% |
| Circum. inches (mm) | 79.84 (2027.9) | 96.23 (2444.16) | 16.39 (416.26) 20.5% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 5.31 (135) | 2.61 (66.25) 96.4% |
| Revolutions per mile (km) | 793.6 (493.12) | 658.44 (409.14) | -135.16 (-83.98) -17% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.11 mph (38.79 km/h) |
| 25 mph (40.23 km/h) | 30.13 mph (48.49 km/h) |
| 30 mph (48.28 km/h) | 36.16 mph (58.19 km/h) |
| 35 mph (56.33 km/h) | 42.18 mph (67.89 km/h) |
| 40 mph (64.37 km/h) | 48.21 mph (77.59 km/h) |
| 45 mph (72.42 km/h) | 54.24 mph (87.29 km/h) |
| 50 mph (80.47 km/h) | 60.26 mph (96.98 km/h) |
| 55 mph (88.51 km/h) | 66.29 mph (106.68 km/h) |
| 60 mph (96.56 km/h) | 72.32 mph (116.38 km/h) |
| 65 mph (104.61 km/h) | 78.34 mph (126.08 km/h) |
| 70 mph (112.65 km/h) | 84.37 mph (135.78 km/h) |
| 75 mph (120.7 km/h) | 90.4 mph (145.48 km/h) |
| 80 mph (128.75 km/h) | 96.42 mph (155.18 km/h) |
| 85 mph (136.79 km/h) | 102.45 mph (164.87 km/h) |
| 90 mph (144.84 km/h) | 108.47 mph (174.57 km/h) |
| 95 mph (152.89 km/h) | 114.5 mph (184.27 km/h) |
| 100 mph (160.93 km/h) | 120.53 mph (193.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1676 | 1947 | 2096 | 2189 | 2289 | 2360 | 2439 | 2531 | 2660 | 2788 | 2931 | 3045 | 3251 | 3480 | 3658 | 3772 | 3836 | 4071 | 4399 | 5112 |
Better Fuel Economy Factory Ratios Increased Power
