Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/75-15 | 170/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.27 (591) | 25.04 (636) | 1.77 (45) 7.6% |
| Width inches (mm) | 5.51 (140) | 6.69 (170) | 1.18 (30) 21.4% |
| Circum. inches (mm) | 73.1 (1856.68) | 78.66 (1998.05) | 5.57 (141.37) 7.6% |
| Sidewall Height inches (mm) | 4.13 (105) | 5.02 (127.5) | 0.89 (22.5) 21.4% |
| Revolutions per mile (km) | 866.79 (538.59) | 805.46 (500.49) | -61.33 (-38.11) -7.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.52 mph (34.64 km/h) |
| 25 mph (40.23 km/h) | 26.9 mph (43.3 km/h) |
| 30 mph (48.28 km/h) | 32.28 mph (51.96 km/h) |
| 35 mph (56.33 km/h) | 37.66 mph (60.62 km/h) |
| 40 mph (64.37 km/h) | 43.05 mph (69.28 km/h) |
| 45 mph (72.42 km/h) | 48.43 mph (77.93 km/h) |
| 50 mph (80.47 km/h) | 53.81 mph (86.59 km/h) |
| 55 mph (88.51 km/h) | 59.19 mph (95.25 km/h) |
| 60 mph (96.56 km/h) | 64.57 mph (103.91 km/h) |
| 65 mph (104.61 km/h) | 69.95 mph (112.57 km/h) |
| 70 mph (112.65 km/h) | 75.33 mph (121.23 km/h) |
| 75 mph (120.7 km/h) | 80.71 mph (129.89 km/h) |
| 80 mph (128.75 km/h) | 86.09 mph (138.55 km/h) |
| 85 mph (136.79 km/h) | 91.47 mph (147.21 km/h) |
| 90 mph (144.84 km/h) | 96.85 mph (155.87 km/h) |
| 95 mph (152.89 km/h) | 102.23 mph (164.53 km/h) |
| 100 mph (160.93 km/h) | 107.61 mph (173.19 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2050 | 2381 | 2564 | 2678 | 2800 | 2887 | 2983 | 3096 | 3253 | 3410 | 3585 | 3724 | 3977 | 4256 | 4475 | 4614 | 4693 | 4980 | 5382 | 6254 |
Better Fuel Economy Factory Ratios Increased Power
