Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/70-16 | 185/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 26.2 (665.4) | 0.83 (21) 3.3% |
| Width inches (mm) | 6.69 (170) | 7.28 (185) | 0.59 (15) 8.8% |
| Circum. inches (mm) | 79.7 (2024.44) | 82.3 (2090.42) | 2.6 (65.97) 3.3% |
| Sidewall Height inches (mm) | 4.69 (119) | 5.1 (129.5) | 0.41 (10.5) 8.8% |
| Revolutions per mile (km) | 794.96 (493.96) | 769.87 (478.37) | -25.09 (-15.59) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.65 mph (33.24 km/h) |
| 25 mph (40.23 km/h) | 25.81 mph (41.54 km/h) |
| 30 mph (48.28 km/h) | 30.98 mph (49.85 km/h) |
| 35 mph (56.33 km/h) | 36.14 mph (58.16 km/h) |
| 40 mph (64.37 km/h) | 41.3 mph (66.47 km/h) |
| 45 mph (72.42 km/h) | 46.47 mph (74.78 km/h) |
| 50 mph (80.47 km/h) | 51.63 mph (83.09 km/h) |
| 55 mph (88.51 km/h) | 56.79 mph (91.4 km/h) |
| 60 mph (96.56 km/h) | 61.96 mph (99.71 km/h) |
| 65 mph (104.61 km/h) | 67.12 mph (108.02 km/h) |
| 70 mph (112.65 km/h) | 72.28 mph (116.33 km/h) |
| 75 mph (120.7 km/h) | 77.44 mph (124.63 km/h) |
| 80 mph (128.75 km/h) | 82.61 mph (132.94 km/h) |
| 85 mph (136.79 km/h) | 87.77 mph (141.25 km/h) |
| 90 mph (144.84 km/h) | 92.93 mph (149.56 km/h) |
| 95 mph (152.89 km/h) | 98.1 mph (157.87 km/h) |
| 100 mph (160.93 km/h) | 103.26 mph (166.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1959 | 2276 | 2451 | 2559 | 2676 | 2760 | 2851 | 2960 | 3110 | 3260 | 3426 | 3560 | 3802 | 4068 | 4277 | 4410 | 4485 | 4760 | 5144 | 5978 |
Better Fuel Economy Factory Ratios Increased Power
