Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 26/12-12 | 305/65-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.93 (658.6) | 27.61 (701.3) | 1.68 (42.7) 6.5% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 81.46 (2069.05) | 86.74 (2203.2) | 5.28 (134.15) 6.5% |
| Sidewall Height inches (mm) | 6.96 (176.9) | 7.81 (198.25) | 0.84 (21.35) 12.1% |
| Revolutions per mile (km) | 777.82 (483.31) | 730.46 (453.88) | -47.36 (-29.43) -6.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.3 mph (34.27 km/h) |
| 25 mph (40.23 km/h) | 26.62 mph (42.84 km/h) |
| 30 mph (48.28 km/h) | 31.95 mph (51.41 km/h) |
| 35 mph (56.33 km/h) | 37.27 mph (59.98 km/h) |
| 40 mph (64.37 km/h) | 42.59 mph (68.55 km/h) |
| 45 mph (72.42 km/h) | 47.92 mph (77.12 km/h) |
| 50 mph (80.47 km/h) | 53.24 mph (85.68 km/h) |
| 55 mph (88.51 km/h) | 58.57 mph (94.25 km/h) |
| 60 mph (96.56 km/h) | 63.89 mph (102.82 km/h) |
| 65 mph (104.61 km/h) | 69.21 mph (111.39 km/h) |
| 70 mph (112.65 km/h) | 74.54 mph (119.96 km/h) |
| 75 mph (120.7 km/h) | 79.86 mph (128.53 km/h) |
| 80 mph (128.75 km/h) | 85.19 mph (137.1 km/h) |
| 85 mph (136.79 km/h) | 90.51 mph (145.66 km/h) |
| 90 mph (144.84 km/h) | 95.84 mph (154.23 km/h) |
| 95 mph (152.89 km/h) | 101.16 mph (162.8 km/h) |
| 100 mph (160.93 km/h) | 106.48 mph (171.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1859 | 2159 | 2326 | 2428 | 2539 | 2618 | 2705 | 2808 | 2950 | 3093 | 3251 | 3378 | 3607 | 3860 | 4058 | 4184 | 4256 | 4517 | 4881 | 5672 |
Better Fuel Economy Factory Ratios Increased Power
