Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/55-17 | 140/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.36 (618.8) | 25.82 (655.8) | 1.46 (37) 6% |
| Width inches (mm) | 6.69 (170) | 5.51 (140) | -1.18 (-30) -17.6% |
| Circum. inches (mm) | 76.54 (1944.02) | 81.11 (2060.26) | 4.58 (116.24) 6% |
| Sidewall Height inches (mm) | 3.68 (93.5) | 4.41 (112) | 0.73 (18.5) 19.8% |
| Revolutions per mile (km) | 827.84 (514.4) | 781.14 (485.38) | -46.71 (-29.02) -5.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.2 mph (34.11 km/h) |
| 25 mph (40.23 km/h) | 26.49 mph (42.64 km/h) |
| 30 mph (48.28 km/h) | 31.79 mph (51.17 km/h) |
| 35 mph (56.33 km/h) | 37.09 mph (59.7 km/h) |
| 40 mph (64.37 km/h) | 42.39 mph (68.22 km/h) |
| 45 mph (72.42 km/h) | 47.69 mph (76.75 km/h) |
| 50 mph (80.47 km/h) | 52.99 mph (85.28 km/h) |
| 55 mph (88.51 km/h) | 58.29 mph (93.81 km/h) |
| 60 mph (96.56 km/h) | 63.59 mph (102.33 km/h) |
| 65 mph (104.61 km/h) | 68.89 mph (110.86 km/h) |
| 70 mph (112.65 km/h) | 74.19 mph (119.39 km/h) |
| 75 mph (120.7 km/h) | 79.48 mph (127.92 km/h) |
| 80 mph (128.75 km/h) | 84.78 mph (136.45 km/h) |
| 85 mph (136.79 km/h) | 90.08 mph (144.97 km/h) |
| 90 mph (144.84 km/h) | 95.38 mph (153.5 km/h) |
| 95 mph (152.89 km/h) | 100.68 mph (162.03 km/h) |
| 100 mph (160.93 km/h) | 105.98 mph (170.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1988 | 2309 | 2487 | 2597 | 2715 | 2800 | 2893 | 3003 | 3155 | 3307 | 3477 | 3612 | 3857 | 4128 | 4339 | 4475 | 4551 | 4830 | 5219 | 6065 |
Better Fuel Economy Factory Ratios Increased Power
