Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 25/10-12 | 155/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25 (635) | 21.76 (552.8) | -3.24 (-82.2) -12.9% |
| Width inches (mm) | 10 (254) | 6.1 (155) | -3.9 (-99) -39% |
| Circum. inches (mm) | 78.54 (1994.91) | 68.37 (1736.67) | -10.17 (-258.24) -12.9% |
| Sidewall Height inches (mm) | 6.5 (165.1) | 4.88 (124) | -1.62 (-41.1) -24.9% |
| Revolutions per mile (km) | 806.72 (501.27) | 926.68 (575.81) | 119.96 (74.54) 14.9% |
155/80-12 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.41 mph (28.02 km/h) |
| 25 mph (40.23 km/h) | 21.76 mph (35.03 km/h) |
| 30 mph (48.28 km/h) | 26.12 mph (42.03 km/h) |
| 35 mph (56.33 km/h) | 30.47 mph (49.04 km/h) |
| 40 mph (64.37 km/h) | 34.82 mph (56.04 km/h) |
| 45 mph (72.42 km/h) | 39.17 mph (63.05 km/h) |
| 50 mph (80.47 km/h) | 43.53 mph (70.05 km/h) |
| 55 mph (88.51 km/h) | 47.88 mph (77.06 km/h) |
| 60 mph (96.56 km/h) | 52.23 mph (84.06 km/h) |
| 65 mph (104.61 km/h) | 56.59 mph (91.07 km/h) |
| 70 mph (112.65 km/h) | 60.94 mph (98.07 km/h) |
| 75 mph (120.7 km/h) | 65.29 mph (105.08 km/h) |
| 80 mph (128.75 km/h) | 69.64 mph (112.08 km/h) |
| 85 mph (136.79 km/h) | 74 mph (119.09 km/h) |
| 90 mph (144.84 km/h) | 78.35 mph (126.09 km/h) |
| 95 mph (152.89 km/h) | 82.7 mph (133.1 km/h) |
| 100 mph (160.93 km/h) | 87.06 mph (140.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
