Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 170/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 23.37 (593.6) | -1.97 (-50) -7.8% |
| Width inches (mm) | 7.09 (180) | 6.69 (170) | -0.39 (-10) -5.6% |
| Circum. inches (mm) | 79.6 (2021.93) | 73.42 (1864.85) | -6.18 (-157.08) -7.8% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.69 (119) | -0.98 (-25) -17.4% |
| Revolutions per mile (km) | 795.94 (494.58) | 862.99 (536.24) | 67.04 (41.66) 8.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.45 mph (29.69 km/h) |
| 25 mph (40.23 km/h) | 23.06 mph (37.11 km/h) |
| 30 mph (48.28 km/h) | 27.67 mph (44.53 km/h) |
| 35 mph (56.33 km/h) | 32.28 mph (51.95 km/h) |
| 40 mph (64.37 km/h) | 36.89 mph (59.37 km/h) |
| 45 mph (72.42 km/h) | 41.5 mph (66.79 km/h) |
| 50 mph (80.47 km/h) | 46.12 mph (74.22 km/h) |
| 55 mph (88.51 km/h) | 50.73 mph (81.64 km/h) |
| 60 mph (96.56 km/h) | 55.34 mph (89.06 km/h) |
| 65 mph (104.61 km/h) | 59.95 mph (96.48 km/h) |
| 70 mph (112.65 km/h) | 64.56 mph (103.9 km/h) |
| 75 mph (120.7 km/h) | 69.17 mph (111.32 km/h) |
| 80 mph (128.75 km/h) | 73.78 mph (118.75 km/h) |
| 85 mph (136.79 km/h) | 78.4 mph (126.17 km/h) |
| 90 mph (144.84 km/h) | 83.01 mph (133.59 km/h) |
| 95 mph (152.89 km/h) | 87.62 mph (141.01 km/h) |
| 100 mph (160.93 km/h) | 92.23 mph (148.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2196 | 2551 | 2748 | 2869 | 3000 | 3093 | 3196 | 3318 | 3486 | 3654 | 3841 | 3990 | 4261 | 4560 | 4794 | 4944 | 5028 | 5336 | 5766 | 6701 |
Better Fuel Economy Factory Ratios Increased Power
