Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/65-16 | 180/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.21 (640.4) | 25.92 (658.4) | 0.71 (18) 2.8% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 79.21 (2011.88) | 81.43 (2068.42) | 2.23 (56.55) 2.8% |
| Sidewall Height inches (mm) | 4.61 (117) | 4.96 (126) | 0.35 (9) 7.7% |
| Revolutions per mile (km) | 799.92 (497.05) | 778.05 (483.46) | -21.87 (-13.59) -2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.56 mph (33.09 km/h) |
| 25 mph (40.23 km/h) | 25.7 mph (41.36 km/h) |
| 30 mph (48.28 km/h) | 30.84 mph (49.64 km/h) |
| 35 mph (56.33 km/h) | 35.98 mph (57.91 km/h) |
| 40 mph (64.37 km/h) | 41.12 mph (66.18 km/h) |
| 45 mph (72.42 km/h) | 46.26 mph (74.46 km/h) |
| 50 mph (80.47 km/h) | 51.41 mph (82.73 km/h) |
| 55 mph (88.51 km/h) | 56.55 mph (91 km/h) |
| 60 mph (96.56 km/h) | 61.69 mph (99.27 km/h) |
| 65 mph (104.61 km/h) | 66.83 mph (107.55 km/h) |
| 70 mph (112.65 km/h) | 71.97 mph (115.82 km/h) |
| 75 mph (120.7 km/h) | 77.11 mph (124.09 km/h) |
| 80 mph (128.75 km/h) | 82.25 mph (132.37 km/h) |
| 85 mph (136.79 km/h) | 87.39 mph (140.64 km/h) |
| 90 mph (144.84 km/h) | 92.53 mph (148.91 km/h) |
| 95 mph (152.89 km/h) | 97.67 mph (157.19 km/h) |
| 100 mph (160.93 km/h) | 102.81 mph (165.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1980 | 2300 | 2477 | 2587 | 2705 | 2789 | 2882 | 2991 | 3143 | 3294 | 3463 | 3598 | 3842 | 4112 | 4322 | 4457 | 4533 | 4811 | 5199 | 6041 |
Better Fuel Economy Factory Ratios Increased Power
