Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/80-12 | 255/65-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.91 (632.8) | 25.05 (636.3) | 0.14 (3.5) 0.6% |
| Width inches (mm) | 8.07 (205) | 10.04 (255) | 1.97 (50) 24.4% |
| Circum. inches (mm) | 78.27 (1988) | 78.7 (1999) | 0.43 (11) 0.6% |
| Sidewall Height inches (mm) | 6.46 (164) | 6.53 (165.75) | 0.07 (1.75) 1.1% |
| Revolutions per mile (km) | 809.53 (503.02) | 805.08 (500.25) | -4.45 (-2.77) -0.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.11 mph (32.36 km/h) |
| 25 mph (40.23 km/h) | 25.14 mph (40.46 km/h) |
| 30 mph (48.28 km/h) | 30.17 mph (48.55 km/h) |
| 35 mph (56.33 km/h) | 35.19 mph (56.64 km/h) |
| 40 mph (64.37 km/h) | 40.22 mph (64.73 km/h) |
| 45 mph (72.42 km/h) | 45.25 mph (72.82 km/h) |
| 50 mph (80.47 km/h) | 50.28 mph (80.91 km/h) |
| 55 mph (88.51 km/h) | 55.3 mph (89 km/h) |
| 60 mph (96.56 km/h) | 60.33 mph (97.09 km/h) |
| 65 mph (104.61 km/h) | 65.36 mph (105.19 km/h) |
| 70 mph (112.65 km/h) | 70.39 mph (113.28 km/h) |
| 75 mph (120.7 km/h) | 75.41 mph (121.37 km/h) |
| 80 mph (128.75 km/h) | 80.44 mph (129.46 km/h) |
| 85 mph (136.79 km/h) | 85.47 mph (137.55 km/h) |
| 90 mph (144.84 km/h) | 90.5 mph (145.64 km/h) |
| 95 mph (152.89 km/h) | 95.53 mph (153.73 km/h) |
| 100 mph (160.93 km/h) | 100.55 mph (161.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2049 | 2380 | 2563 | 2676 | 2799 | 2886 | 2982 | 3095 | 3252 | 3409 | 3583 | 3723 | 3975 | 4254 | 4472 | 4612 | 4690 | 4978 | 5379 | 6251 |
Better Fuel Economy Factory Ratios Increased Power
