Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/70-16 | 180/60-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 24.5 (622.4) | -0.87 (-22) -3.4% |
| Width inches (mm) | 6.69 (170) | 7.09 (180) | 0.39 (10) 5.9% |
| Circum. inches (mm) | 79.7 (2024.44) | 76.98 (1955.33) | -2.72 (-69.12) -3.4% |
| Sidewall Height inches (mm) | 4.69 (119) | 4.25 (108) | -0.43 (-11) -9.2% |
| Revolutions per mile (km) | 794.96 (493.96) | 823.06 (511.42) | 28.1 (17.46) 3.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.32 mph (31.09 km/h) |
| 25 mph (40.23 km/h) | 24.15 mph (38.86 km/h) |
| 30 mph (48.28 km/h) | 28.98 mph (46.63 km/h) |
| 35 mph (56.33 km/h) | 33.81 mph (54.4 km/h) |
| 40 mph (64.37 km/h) | 38.63 mph (62.18 km/h) |
| 45 mph (72.42 km/h) | 43.46 mph (69.95 km/h) |
| 50 mph (80.47 km/h) | 48.29 mph (77.72 km/h) |
| 55 mph (88.51 km/h) | 53.12 mph (85.49 km/h) |
| 60 mph (96.56 km/h) | 57.95 mph (93.26 km/h) |
| 65 mph (104.61 km/h) | 62.78 mph (101.04 km/h) |
| 70 mph (112.65 km/h) | 67.61 mph (108.81 km/h) |
| 75 mph (120.7 km/h) | 72.44 mph (116.58 km/h) |
| 80 mph (128.75 km/h) | 77.27 mph (124.35 km/h) |
| 85 mph (136.79 km/h) | 82.1 mph (132.12 km/h) |
| 90 mph (144.84 km/h) | 86.93 mph (139.9 km/h) |
| 95 mph (152.89 km/h) | 91.76 mph (147.67 km/h) |
| 100 mph (160.93 km/h) | 96.59 mph (155.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2095 | 2433 | 2620 | 2736 | 2861 | 2950 | 3048 | 3164 | 3324 | 3485 | 3663 | 3806 | 4064 | 4349 | 4572 | 4715 | 4795 | 5089 | 5499 | 6391 |
Better Fuel Economy Factory Ratios Increased Power
