Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/80-19 | 185/70-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.02 (762.6) | 29.2 (741.6) | -0.83 (-21) -2.8% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 94.32 (2395.78) | 91.72 (2329.81) | -2.6 (-65.97) -2.8% |
| Sidewall Height inches (mm) | 5.51 (140) | 5.1 (129.5) | -0.41 (-10.5) -7.5% |
| Revolutions per mile (km) | 671.74 (417.4) | 690.76 (429.22) | 19.02 (11.82) 2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.45 mph (31.3 km/h) |
| 25 mph (40.23 km/h) | 24.31 mph (39.13 km/h) |
| 30 mph (48.28 km/h) | 29.17 mph (46.95 km/h) |
| 35 mph (56.33 km/h) | 34.04 mph (54.78 km/h) |
| 40 mph (64.37 km/h) | 38.9 mph (62.6 km/h) |
| 45 mph (72.42 km/h) | 43.76 mph (70.43 km/h) |
| 50 mph (80.47 km/h) | 48.62 mph (78.25 km/h) |
| 55 mph (88.51 km/h) | 53.49 mph (86.08 km/h) |
| 60 mph (96.56 km/h) | 58.35 mph (93.9 km/h) |
| 65 mph (104.61 km/h) | 63.21 mph (101.73 km/h) |
| 70 mph (112.65 km/h) | 68.07 mph (109.55 km/h) |
| 75 mph (120.7 km/h) | 72.93 mph (117.38 km/h) |
| 80 mph (128.75 km/h) | 77.8 mph (125.2 km/h) |
| 85 mph (136.79 km/h) | 82.66 mph (133.03 km/h) |
| 90 mph (144.84 km/h) | 87.52 mph (140.85 km/h) |
| 95 mph (152.89 km/h) | 92.38 mph (148.68 km/h) |
| 100 mph (160.93 km/h) | 97.25 mph (156.5 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1758 | 2042 | 2199 | 2296 | 2401 | 2476 | 2558 | 2655 | 2790 | 2925 | 3074 | 3194 | 3411 | 3650 | 3837 | 3957 | 4024 | 4271 | 4615 | 5363 |
Better Fuel Economy Factory Ratios Increased Power
