Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/80-16 | 185/75-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.02 (686.4) | 26.93 (683.9) | -0.1 (-2.5) -0.4% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 84.9 (2156.39) | 84.59 (2148.54) | -0.31 (-7.85) -0.4% |
| Sidewall Height inches (mm) | 5.51 (140) | 5.46 (138.75) | -0.05 (-1.25) -0.9% |
| Revolutions per mile (km) | 746.31 (463.74) | 749.04 (465.43) | 2.73 (1.7) 0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.93 mph (32.07 km/h) |
| 25 mph (40.23 km/h) | 24.91 mph (40.09 km/h) |
| 30 mph (48.28 km/h) | 29.89 mph (48.1 km/h) |
| 35 mph (56.33 km/h) | 34.87 mph (56.12 km/h) |
| 40 mph (64.37 km/h) | 39.85 mph (64.14 km/h) |
| 45 mph (72.42 km/h) | 44.84 mph (72.16 km/h) |
| 50 mph (80.47 km/h) | 49.82 mph (80.17 km/h) |
| 55 mph (88.51 km/h) | 54.8 mph (88.19 km/h) |
| 60 mph (96.56 km/h) | 59.78 mph (96.21 km/h) |
| 65 mph (104.61 km/h) | 64.76 mph (104.23 km/h) |
| 70 mph (112.65 km/h) | 69.75 mph (112.24 km/h) |
| 75 mph (120.7 km/h) | 74.73 mph (120.26 km/h) |
| 80 mph (128.75 km/h) | 79.71 mph (128.28 km/h) |
| 85 mph (136.79 km/h) | 84.69 mph (136.3 km/h) |
| 90 mph (144.84 km/h) | 89.67 mph (144.31 km/h) |
| 95 mph (152.89 km/h) | 94.65 mph (152.33 km/h) |
| 100 mph (160.93 km/h) | 99.64 mph (160.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1906 | 2214 | 2385 | 2490 | 2604 | 2685 | 2774 | 2880 | 3026 | 3172 | 3334 | 3464 | 3699 | 3958 | 4161 | 4291 | 4364 | 4632 | 5005 | 5816 |
Better Fuel Economy Factory Ratios Increased Power
