Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 160/80-15 | 170/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 27.05 (687) | 1.97 (50) 7.8% |
| Width inches (mm) | 6.3 (160) | 6.69 (170) | 0.39 (10) 6.3% |
| Circum. inches (mm) | 78.79 (2001.19) | 84.97 (2158.27) | 6.18 (157.08) 7.8% |
| Sidewall Height inches (mm) | 5.04 (128) | 6.02 (153) | 0.98 (25) 19.5% |
| Revolutions per mile (km) | 804.19 (499.7) | 745.66 (463.33) | -58.53 (-36.37) -7.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.57 mph (34.71 km/h) |
| 25 mph (40.23 km/h) | 26.96 mph (43.39 km/h) |
| 30 mph (48.28 km/h) | 32.35 mph (52.07 km/h) |
| 35 mph (56.33 km/h) | 37.75 mph (60.75 km/h) |
| 40 mph (64.37 km/h) | 43.14 mph (69.43 km/h) |
| 45 mph (72.42 km/h) | 48.53 mph (78.11 km/h) |
| 50 mph (80.47 km/h) | 53.92 mph (86.78 km/h) |
| 55 mph (88.51 km/h) | 59.32 mph (95.46 km/h) |
| 60 mph (96.56 km/h) | 64.71 mph (104.14 km/h) |
| 65 mph (104.61 km/h) | 70.1 mph (112.82 km/h) |
| 70 mph (112.65 km/h) | 75.49 mph (121.5 km/h) |
| 75 mph (120.7 km/h) | 80.89 mph (130.18 km/h) |
| 80 mph (128.75 km/h) | 86.28 mph (138.85 km/h) |
| 85 mph (136.79 km/h) | 91.67 mph (147.53 km/h) |
| 90 mph (144.84 km/h) | 97.06 mph (156.21 km/h) |
| 95 mph (152.89 km/h) | 102.46 mph (164.89 km/h) |
| 100 mph (160.93 km/h) | 107.85 mph (173.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1898 | 2204 | 2374 | 2479 | 2592 | 2673 | 2762 | 2867 | 3012 | 3157 | 3319 | 3448 | 3682 | 3940 | 4142 | 4272 | 4344 | 4611 | 4982 | 5790 |
Better Fuel Economy Factory Ratios Increased Power
