Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/80-12 | 25/8-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.91 (632.8) | 24.95 (633.66) | 0.03 (0.86) 0.1% |
| Width inches (mm) | 8.07 (205) | 7.99 (203) | -0.08 (-2) -1% |
| Circum. inches (mm) | 78.27 (1988) | 78.37 (1990.7) | 0.11 (2.7) 0.1% |
| Sidewall Height inches (mm) | 6.46 (164) | 6.47 (164.43) | 0.02 (0.43) 0.3% |
| Revolutions per mile (km) | 809.53 (503.02) | 808.43 (502.33) | -1.1 (-0.68) -0.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.03 mph (32.23 km/h) |
| 25 mph (40.23 km/h) | 25.03 mph (40.29 km/h) |
| 30 mph (48.28 km/h) | 30.04 mph (48.35 km/h) |
| 35 mph (56.33 km/h) | 35.05 mph (56.4 km/h) |
| 40 mph (64.37 km/h) | 40.05 mph (64.46 km/h) |
| 45 mph (72.42 km/h) | 45.06 mph (72.52 km/h) |
| 50 mph (80.47 km/h) | 50.07 mph (80.58 km/h) |
| 55 mph (88.51 km/h) | 55.07 mph (88.63 km/h) |
| 60 mph (96.56 km/h) | 60.08 mph (96.69 km/h) |
| 65 mph (104.61 km/h) | 65.09 mph (104.75 km/h) |
| 70 mph (112.65 km/h) | 70.1 mph (112.81 km/h) |
| 75 mph (120.7 km/h) | 75.1 mph (120.87 km/h) |
| 80 mph (128.75 km/h) | 80.11 mph (128.92 km/h) |
| 85 mph (136.79 km/h) | 85.12 mph (136.98 km/h) |
| 90 mph (144.84 km/h) | 90.12 mph (145.04 km/h) |
| 95 mph (152.89 km/h) | 95.13 mph (153.1 km/h) |
| 100 mph (160.93 km/h) | 100.14 mph (161.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2057 | 2390 | 2574 | 2688 | 2810 | 2898 | 2994 | 3108 | 3265 | 3423 | 3598 | 3738 | 3992 | 4272 | 4491 | 4631 | 4710 | 4999 | 5402 | 6277 |
Better Fuel Economy Factory Ratios Increased Power
