Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/60-14 | 170/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.61 (523.6) | 26.37 (669.8) | 5.76 (146.2) 27.9% |
| Width inches (mm) | 5.51 (140) | 6.69 (170) | 1.18 (30) 21.4% |
| Circum. inches (mm) | 64.76 (1644.94) | 82.84 (2104.24) | 18.08 (459.3) 27.9% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.69 (119) | 1.38 (35) 41.7% |
| Revolutions per mile (km) | 978.36 (607.92) | 764.81 (475.23) | -213.55 (-132.69) -21.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.58 mph (41.17 km/h) |
| 25 mph (40.23 km/h) | 31.98 mph (51.47 km/h) |
| 30 mph (48.28 km/h) | 38.38 mph (61.76 km/h) |
| 35 mph (56.33 km/h) | 44.77 mph (72.05 km/h) |
| 40 mph (64.37 km/h) | 51.17 mph (82.35 km/h) |
| 45 mph (72.42 km/h) | 57.56 mph (92.64 km/h) |
| 50 mph (80.47 km/h) | 63.96 mph (102.94 km/h) |
| 55 mph (88.51 km/h) | 70.36 mph (113.23 km/h) |
| 60 mph (96.56 km/h) | 76.75 mph (123.52 km/h) |
| 65 mph (104.61 km/h) | 83.15 mph (133.82 km/h) |
| 70 mph (112.65 km/h) | 89.55 mph (144.11 km/h) |
| 75 mph (120.7 km/h) | 95.94 mph (154.4 km/h) |
| 80 mph (128.75 km/h) | 102.34 mph (164.7 km/h) |
| 85 mph (136.79 km/h) | 108.73 mph (174.99 km/h) |
| 90 mph (144.84 km/h) | 115.13 mph (185.28 km/h) |
| 95 mph (152.89 km/h) | 121.53 mph (195.58 km/h) |
| 100 mph (160.93 km/h) | 127.92 mph (205.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1946 | 2261 | 2435 | 2543 | 2659 | 2741 | 2832 | 2940 | 3089 | 3238 | 3404 | 3536 | 3777 | 4042 | 4249 | 4381 | 4456 | 4729 | 5110 | 5938 |
Better Fuel Economy Factory Ratios Increased Power
