Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 170/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 22.7 (576.6) | -2.64 (-67) -10.4% |
| Width inches (mm) | 7.09 (180) | 6.69 (170) | -0.39 (-10) -5.6% |
| Circum. inches (mm) | 79.6 (2021.93) | 71.32 (1811.44) | -8.29 (-210.49) -10.4% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.35 (110.5) | -1.32 (-33.5) -23.3% |
| Revolutions per mile (km) | 795.94 (494.58) | 888.43 (552.05) | 92.49 (57.47) 11.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.92 mph (28.84 km/h) |
| 25 mph (40.23 km/h) | 22.4 mph (36.05 km/h) |
| 30 mph (48.28 km/h) | 26.88 mph (43.25 km/h) |
| 35 mph (56.33 km/h) | 31.36 mph (50.46 km/h) |
| 40 mph (64.37 km/h) | 35.84 mph (57.67 km/h) |
| 45 mph (72.42 km/h) | 40.32 mph (64.88 km/h) |
| 50 mph (80.47 km/h) | 44.79 mph (72.09 km/h) |
| 55 mph (88.51 km/h) | 49.27 mph (79.3 km/h) |
| 60 mph (96.56 km/h) | 53.75 mph (86.51 km/h) |
| 65 mph (104.61 km/h) | 58.23 mph (93.72 km/h) |
| 70 mph (112.65 km/h) | 62.71 mph (100.93 km/h) |
| 75 mph (120.7 km/h) | 67.19 mph (108.14 km/h) |
| 80 mph (128.75 km/h) | 71.67 mph (115.34 km/h) |
| 85 mph (136.79 km/h) | 76.15 mph (122.55 km/h) |
| 90 mph (144.84 km/h) | 80.63 mph (129.76 km/h) |
| 95 mph (152.89 km/h) | 85.11 mph (136.97 km/h) |
| 100 mph (160.93 km/h) | 89.59 mph (144.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2261 | 2626 | 2829 | 2954 | 3088 | 3184 | 3290 | 3415 | 3589 | 3762 | 3954 | 4108 | 4387 | 4695 | 4935 | 5089 | 5176 | 5493 | 5936 | 6898 |
Better Fuel Economy Factory Ratios Increased Power
