Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/70-15 | 170/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.47 (647) | 25.71 (653) | 0.24 (6) 0.9% |
| Width inches (mm) | 7.48 (190) | 6.69 (170) | -0.79 (-20) -10.5% |
| Circum. inches (mm) | 80.02 (2032.61) | 80.77 (2051.46) | 0.74 (18.85) 0.9% |
| Sidewall Height inches (mm) | 5.24 (133) | 5.35 (136) | 0.12 (3) 2.3% |
| Revolutions per mile (km) | 791.76 (491.98) | 784.49 (487.46) | -7.27 (-4.52) -0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.23 mph (40.61 km/h) |
| 30 mph (48.28 km/h) | 30.28 mph (48.73 km/h) |
| 35 mph (56.33 km/h) | 35.32 mph (56.85 km/h) |
| 40 mph (64.37 km/h) | 40.37 mph (64.97 km/h) |
| 45 mph (72.42 km/h) | 45.42 mph (73.09 km/h) |
| 50 mph (80.47 km/h) | 50.46 mph (81.21 km/h) |
| 55 mph (88.51 km/h) | 55.51 mph (89.33 km/h) |
| 60 mph (96.56 km/h) | 60.56 mph (97.46 km/h) |
| 65 mph (104.61 km/h) | 65.6 mph (105.58 km/h) |
| 70 mph (112.65 km/h) | 70.65 mph (113.7 km/h) |
| 75 mph (120.7 km/h) | 75.7 mph (121.82 km/h) |
| 80 mph (128.75 km/h) | 80.74 mph (129.94 km/h) |
| 85 mph (136.79 km/h) | 85.79 mph (138.06 km/h) |
| 90 mph (144.84 km/h) | 90.83 mph (146.18 km/h) |
| 95 mph (152.89 km/h) | 95.88 mph (154.31 km/h) |
| 100 mph (160.93 km/h) | 100.93 mph (162.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1996 | 2319 | 2498 | 2608 | 2727 | 2812 | 2905 | 3016 | 3169 | 3322 | 3492 | 3627 | 3874 | 4146 | 4358 | 4494 | 4570 | 4851 | 5242 | 6091 |
Better Fuel Economy Factory Ratios Increased Power
