Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/65-16 | 170/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.7 (627.4) | 26.37 (669.8) | 1.67 (42.4) 6.8% |
| Width inches (mm) | 6.69 (170) | 6.69 (170) | 0 (0) 0% |
| Circum. inches (mm) | 77.6 (1971.04) | 82.84 (2104.24) | 5.24 (133.2) 6.8% |
| Sidewall Height inches (mm) | 4.35 (110.5) | 4.69 (119) | 0.33 (8.5) 7.7% |
| Revolutions per mile (km) | 816.5 (507.35) | 764.81 (475.23) | -51.69 (-32.12) -6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.35 mph (34.36 km/h) |
| 25 mph (40.23 km/h) | 26.69 mph (42.95 km/h) |
| 30 mph (48.28 km/h) | 32.03 mph (51.54 km/h) |
| 35 mph (56.33 km/h) | 37.37 mph (60.13 km/h) |
| 40 mph (64.37 km/h) | 42.7 mph (68.72 km/h) |
| 45 mph (72.42 km/h) | 48.04 mph (77.31 km/h) |
| 50 mph (80.47 km/h) | 53.38 mph (85.91 km/h) |
| 55 mph (88.51 km/h) | 58.72 mph (94.5 km/h) |
| 60 mph (96.56 km/h) | 64.05 mph (103.09 km/h) |
| 65 mph (104.61 km/h) | 69.39 mph (111.68 km/h) |
| 70 mph (112.65 km/h) | 74.73 mph (120.27 km/h) |
| 75 mph (120.7 km/h) | 80.07 mph (128.86 km/h) |
| 80 mph (128.75 km/h) | 85.41 mph (137.45 km/h) |
| 85 mph (136.79 km/h) | 90.74 mph (146.04 km/h) |
| 90 mph (144.84 km/h) | 96.08 mph (154.63 km/h) |
| 95 mph (152.89 km/h) | 101.42 mph (163.22 km/h) |
| 100 mph (160.93 km/h) | 106.76 mph (171.81 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
