Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 155/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 20.54 (521.8) | 0.04 (1) 0.2% |
| Width inches (mm) | 5.31 (135) | 6.1 (155) | 0.79 (20) 14.8% |
| Circum. inches (mm) | 64.42 (1636.14) | 64.54 (1639.28) | 0.12 (3.14) 0.2% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.27 (108.5) | 0.02 (0.5) 0.5% |
| Revolutions per mile (km) | 983.62 (611.19) | 981.74 (610.02) | -1.89 (-1.17) -0.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.04 mph (32.25 km/h) |
| 25 mph (40.23 km/h) | 25.05 mph (40.31 km/h) |
| 30 mph (48.28 km/h) | 30.06 mph (48.37 km/h) |
| 35 mph (56.33 km/h) | 35.07 mph (56.44 km/h) |
| 40 mph (64.37 km/h) | 40.08 mph (64.5 km/h) |
| 45 mph (72.42 km/h) | 45.09 mph (72.56 km/h) |
| 50 mph (80.47 km/h) | 50.1 mph (80.62 km/h) |
| 55 mph (88.51 km/h) | 55.11 mph (88.68 km/h) |
| 60 mph (96.56 km/h) | 60.12 mph (96.75 km/h) |
| 65 mph (104.61 km/h) | 65.12 mph (104.81 km/h) |
| 70 mph (112.65 km/h) | 70.13 mph (112.87 km/h) |
| 75 mph (120.7 km/h) | 75.14 mph (120.93 km/h) |
| 80 mph (128.75 km/h) | 80.15 mph (128.99 km/h) |
| 85 mph (136.79 km/h) | 85.16 mph (137.06 km/h) |
| 90 mph (144.84 km/h) | 90.17 mph (145.12 km/h) |
| 95 mph (152.89 km/h) | 95.18 mph (153.18 km/h) |
| 100 mph (160.93 km/h) | 100.19 mph (161.24 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
