Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/80-15 | 165/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.39 (645) | 24.09 (612) | -1.3 (-33) -5.1% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 79.78 (2026.33) | 75.7 (1922.65) | -4.08 (-103.67) -5.1% |
| Sidewall Height inches (mm) | 5.2 (132) | 4.55 (115.5) | -0.65 (-16.5) -12.5% |
| Revolutions per mile (km) | 794.22 (493.5) | 837.04 (520.11) | 42.83 (26.61) 5.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.98 mph (30.54 km/h) |
| 25 mph (40.23 km/h) | 23.72 mph (38.18 km/h) |
| 30 mph (48.28 km/h) | 28.47 mph (45.81 km/h) |
| 35 mph (56.33 km/h) | 33.21 mph (53.45 km/h) |
| 40 mph (64.37 km/h) | 37.95 mph (61.08 km/h) |
| 45 mph (72.42 km/h) | 42.7 mph (68.72 km/h) |
| 50 mph (80.47 km/h) | 47.44 mph (76.35 km/h) |
| 55 mph (88.51 km/h) | 52.19 mph (83.99 km/h) |
| 60 mph (96.56 km/h) | 56.93 mph (91.62 km/h) |
| 65 mph (104.61 km/h) | 61.67 mph (99.26 km/h) |
| 70 mph (112.65 km/h) | 66.42 mph (106.89 km/h) |
| 75 mph (120.7 km/h) | 71.16 mph (114.53 km/h) |
| 80 mph (128.75 km/h) | 75.91 mph (122.16 km/h) |
| 85 mph (136.79 km/h) | 80.65 mph (129.8 km/h) |
| 90 mph (144.84 km/h) | 85.4 mph (137.43 km/h) |
| 95 mph (152.89 km/h) | 90.14 mph (145.07 km/h) |
| 100 mph (160.93 km/h) | 94.88 mph (152.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2130 | 2475 | 2665 | 2783 | 2910 | 3000 | 3100 | 3218 | 3381 | 3544 | 3725 | 3870 | 4133 | 4423 | 4650 | 4795 | 4877 | 5176 | 5593 | 6499 |
Better Fuel Economy Factory Ratios Increased Power
