Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-12 | 175/55-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.54 (521.8) | 21.58 (548.1) | 1.04 (26.3) 5% |
| Width inches (mm) | 6.1 (155) | 6.89 (175) | 0.79 (20) 12.9% |
| Circum. inches (mm) | 64.54 (1639.28) | 67.79 (1721.91) | 3.25 (82.62) 5% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 3.79 (96.25) | -0.48 (-12.25) -11.3% |
| Revolutions per mile (km) | 981.74 (610.02) | 934.63 (580.75) | -47.11 (-29.27) -4.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.01 mph (33.81 km/h) |
| 25 mph (40.23 km/h) | 26.26 mph (42.26 km/h) |
| 30 mph (48.28 km/h) | 31.51 mph (50.71 km/h) |
| 35 mph (56.33 km/h) | 36.76 mph (59.17 km/h) |
| 40 mph (64.37 km/h) | 42.02 mph (67.62 km/h) |
| 45 mph (72.42 km/h) | 47.27 mph (76.07 km/h) |
| 50 mph (80.47 km/h) | 52.52 mph (84.52 km/h) |
| 55 mph (88.51 km/h) | 57.77 mph (92.98 km/h) |
| 60 mph (96.56 km/h) | 63.02 mph (101.43 km/h) |
| 65 mph (104.61 km/h) | 68.28 mph (109.88 km/h) |
| 70 mph (112.65 km/h) | 73.53 mph (118.33 km/h) |
| 75 mph (120.7 km/h) | 78.78 mph (126.78 km/h) |
| 80 mph (128.75 km/h) | 84.03 mph (135.24 km/h) |
| 85 mph (136.79 km/h) | 89.28 mph (143.69 km/h) |
| 90 mph (144.84 km/h) | 94.54 mph (152.14 km/h) |
| 95 mph (152.89 km/h) | 99.79 mph (160.59 km/h) |
| 100 mph (160.93 km/h) | 105.04 mph (169.05 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
