Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-12 | 145/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.54 (521.8) | 20.99 (533.2) | 0.45 (11.4) 2.2% |
| Width inches (mm) | 6.1 (155) | 5.71 (145) | -0.39 (-10) -6.5% |
| Circum. inches (mm) | 64.54 (1639.28) | 65.95 (1675.1) | 1.41 (35.81) 2.2% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4 (101.5) | -0.28 (-7) -6.5% |
| Revolutions per mile (km) | 981.74 (610.02) | 960.75 (596.98) | -20.99 (-13.04) -2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.44 mph (32.89 km/h) |
| 25 mph (40.23 km/h) | 25.55 mph (41.11 km/h) |
| 30 mph (48.28 km/h) | 30.66 mph (49.34 km/h) |
| 35 mph (56.33 km/h) | 35.76 mph (57.56 km/h) |
| 40 mph (64.37 km/h) | 40.87 mph (65.78 km/h) |
| 45 mph (72.42 km/h) | 45.98 mph (74 km/h) |
| 50 mph (80.47 km/h) | 51.09 mph (82.23 km/h) |
| 55 mph (88.51 km/h) | 56.2 mph (90.45 km/h) |
| 60 mph (96.56 km/h) | 61.31 mph (98.67 km/h) |
| 65 mph (104.61 km/h) | 66.42 mph (106.89 km/h) |
| 70 mph (112.65 km/h) | 71.53 mph (115.12 km/h) |
| 75 mph (120.7 km/h) | 76.64 mph (123.34 km/h) |
| 80 mph (128.75 km/h) | 81.75 mph (131.56 km/h) |
| 85 mph (136.79 km/h) | 86.86 mph (139.78 km/h) |
| 90 mph (144.84 km/h) | 91.97 mph (148.01 km/h) |
| 95 mph (152.89 km/h) | 97.08 mph (156.23 km/h) |
| 100 mph (160.93 km/h) | 102.18 mph (164.45 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
