Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/80-13 | 145/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.02 (610.2) | 21.13 (536.8) | -2.89 (-73.4) -12% |
| Width inches (mm) | 6.89 (175) | 5.71 (145) | -1.18 (-30) -17.1% |
| Circum. inches (mm) | 75.47 (1917) | 66.39 (1686.41) | -9.08 (-230.59) -12% |
| Sidewall Height inches (mm) | 5.51 (140) | 4.57 (116) | -0.94 (-24) -17.1% |
| Revolutions per mile (km) | 839.51 (521.65) | 954.3 (592.98) | 114.79 (71.33) 13.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.59 mph (28.32 km/h) |
| 25 mph (40.23 km/h) | 21.99 mph (35.39 km/h) |
| 30 mph (48.28 km/h) | 26.39 mph (42.47 km/h) |
| 35 mph (56.33 km/h) | 30.79 mph (49.55 km/h) |
| 40 mph (64.37 km/h) | 35.19 mph (56.63 km/h) |
| 45 mph (72.42 km/h) | 39.59 mph (63.71 km/h) |
| 50 mph (80.47 km/h) | 43.99 mph (70.79 km/h) |
| 55 mph (88.51 km/h) | 48.38 mph (77.87 km/h) |
| 60 mph (96.56 km/h) | 52.78 mph (84.95 km/h) |
| 65 mph (104.61 km/h) | 57.18 mph (92.02 km/h) |
| 70 mph (112.65 km/h) | 61.58 mph (99.1 km/h) |
| 75 mph (120.7 km/h) | 65.98 mph (106.18 km/h) |
| 80 mph (128.75 km/h) | 70.38 mph (113.26 km/h) |
| 85 mph (136.79 km/h) | 74.78 mph (120.34 km/h) |
| 90 mph (144.84 km/h) | 79.17 mph (127.42 km/h) |
| 95 mph (152.89 km/h) | 83.57 mph (134.5 km/h) |
| 100 mph (160.93 km/h) | 87.97 mph (141.58 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
