Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 25/10-12 | 27/12-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25 (635) | 27.13 (689.1) | 2.13 (54.1) 8.5% |
| Width inches (mm) | 10 (254) | 12.01 (305) | 2.01 (51) 20.1% |
| Circum. inches (mm) | 78.54 (1994.91) | 85.23 (2164.87) | 6.69 (169.96) 8.5% |
| Sidewall Height inches (mm) | 6.5 (165.1) | 7.56 (192.15) | 1.06 (27.05) 16.4% |
| Revolutions per mile (km) | 806.72 (501.27) | 743.39 (461.92) | -63.33 (-39.35) -7.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.7 mph (34.93 km/h) |
| 25 mph (40.23 km/h) | 27.13 mph (43.66 km/h) |
| 30 mph (48.28 km/h) | 32.56 mph (52.39 km/h) |
| 35 mph (56.33 km/h) | 37.98 mph (61.13 km/h) |
| 40 mph (64.37 km/h) | 43.41 mph (69.86 km/h) |
| 45 mph (72.42 km/h) | 48.83 mph (78.59 km/h) |
| 50 mph (80.47 km/h) | 54.26 mph (87.32 km/h) |
| 55 mph (88.51 km/h) | 59.69 mph (96.06 km/h) |
| 60 mph (96.56 km/h) | 65.11 mph (104.79 km/h) |
| 65 mph (104.61 km/h) | 70.54 mph (113.52 km/h) |
| 70 mph (112.65 km/h) | 75.96 mph (122.25 km/h) |
| 75 mph (120.7 km/h) | 81.39 mph (130.98 km/h) |
| 80 mph (128.75 km/h) | 86.82 mph (139.72 km/h) |
| 85 mph (136.79 km/h) | 92.24 mph (148.45 km/h) |
| 90 mph (144.84 km/h) | 97.67 mph (157.18 km/h) |
| 95 mph (152.89 km/h) | 103.09 mph (165.91 km/h) |
| 100 mph (160.93 km/h) | 108.52 mph (174.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1892 | 2198 | 2367 | 2471 | 2584 | 2665 | 2753 | 2858 | 3003 | 3148 | 3309 | 3437 | 3671 | 3928 | 4130 | 4259 | 4331 | 4597 | 4967 | 5772 |
Better Fuel Economy Factory Ratios Increased Power
