Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-12 | 175/50-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.99 (507.8) | 19.89 (505.2) | -0.1 (-2.6) -0.5% |
| Width inches (mm) | 5.71 (145) | 6.89 (175) | 1.18 (30) 20.7% |
| Circum. inches (mm) | 62.81 (1595.3) | 62.49 (1587.13) | -0.32 (-8.17) -0.5% |
| Sidewall Height inches (mm) | 4 (101.5) | 3.44 (87.5) | -0.55 (-14) -13.8% |
| Revolutions per mile (km) | 1008.8 (626.84) | 1013.99 (630.07) | 5.19 (3.23) 0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.9 mph (32.02 km/h) |
| 25 mph (40.23 km/h) | 24.87 mph (40.03 km/h) |
| 30 mph (48.28 km/h) | 29.85 mph (48.03 km/h) |
| 35 mph (56.33 km/h) | 34.82 mph (56.04 km/h) |
| 40 mph (64.37 km/h) | 39.8 mph (64.04 km/h) |
| 45 mph (72.42 km/h) | 44.77 mph (72.05 km/h) |
| 50 mph (80.47 km/h) | 49.74 mph (80.06 km/h) |
| 55 mph (88.51 km/h) | 54.72 mph (88.06 km/h) |
| 60 mph (96.56 km/h) | 59.69 mph (96.07 km/h) |
| 65 mph (104.61 km/h) | 64.67 mph (104.07 km/h) |
| 70 mph (112.65 km/h) | 69.64 mph (112.08 km/h) |
| 75 mph (120.7 km/h) | 74.62 mph (120.08 km/h) |
| 80 mph (128.75 km/h) | 79.59 mph (128.09 km/h) |
| 85 mph (136.79 km/h) | 84.56 mph (136.09 km/h) |
| 90 mph (144.84 km/h) | 89.54 mph (144.1 km/h) |
| 95 mph (152.89 km/h) | 94.51 mph (152.11 km/h) |
| 100 mph (160.93 km/h) | 99.49 mph (160.11 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
