Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-20 | 31/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.81 (655.5) | 31.02 (787.84) | 5.21 (132.34) 20.2% |
| Width inches (mm) | 11.61 (295) | 12.52 (318) | 0.91 (23) 7.8% |
| Circum. inches (mm) | 81.08 (2059.31) | 97.44 (2475.07) | 16.37 (415.76) 20.2% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 5.51 (139.92) | 2.61 (66.17) 89.7% |
| Revolutions per mile (km) | 781.5 (485.6) | 650.22 (404.03) | -131.27 (-81.57) -16.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.04 mph (38.69 km/h) |
| 25 mph (40.23 km/h) | 30.05 mph (48.36 km/h) |
| 30 mph (48.28 km/h) | 36.06 mph (58.03 km/h) |
| 35 mph (56.33 km/h) | 42.07 mph (67.7 km/h) |
| 40 mph (64.37 km/h) | 48.08 mph (77.37 km/h) |
| 45 mph (72.42 km/h) | 54.09 mph (87.04 km/h) |
| 50 mph (80.47 km/h) | 60.09 mph (96.71 km/h) |
| 55 mph (88.51 km/h) | 66.1 mph (106.38 km/h) |
| 60 mph (96.56 km/h) | 72.11 mph (116.06 km/h) |
| 65 mph (104.61 km/h) | 78.12 mph (125.73 km/h) |
| 70 mph (112.65 km/h) | 84.13 mph (135.4 km/h) |
| 75 mph (120.7 km/h) | 90.14 mph (145.07 km/h) |
| 80 mph (128.75 km/h) | 96.15 mph (154.74 km/h) |
| 85 mph (136.79 km/h) | 102.16 mph (164.41 km/h) |
| 90 mph (144.84 km/h) | 108.17 mph (174.08 km/h) |
| 95 mph (152.89 km/h) | 114.18 mph (183.75 km/h) |
| 100 mph (160.93 km/h) | 120.19 mph (193.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1655 | 1922 | 2070 | 2162 | 2260 | 2331 | 2408 | 2500 | 2626 | 2753 | 2894 | 3007 | 3211 | 3436 | 3612 | 3725 | 3788 | 4021 | 4344 | 5049 |
Better Fuel Economy Factory Ratios Increased Power
