Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/80-13 | 165/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.65 (626.2) | 23.39 (594.2) | -1.26 (-32) -5.1% |
| Width inches (mm) | 7.28 (185) | 6.5 (165) | -0.79 (-20) -10.8% |
| Circum. inches (mm) | 77.45 (1967.27) | 73.49 (1866.73) | -3.96 (-100.53) -5.1% |
| Sidewall Height inches (mm) | 5.83 (148) | 5.2 (132) | -0.63 (-16) -10.8% |
| Revolutions per mile (km) | 818.06 (508.32) | 862.12 (535.69) | 44.06 (27.37) 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) | 37.96 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 (76.36 km/h) |
| 55 mph (88.51 km/h) | 52.19 mph (83.99 km/h) |
| 60 mph (96.56 km/h) | 56.93 mph (91.63 km/h) |
| 65 mph (104.61 km/h) | 61.68 mph (99.26 km/h) |
| 70 mph (112.65 km/h) | 66.42 mph (106.9 km/h) |
| 75 mph (120.7 km/h) | 71.17 mph (114.53 km/h) |
| 80 mph (128.75 km/h) | 75.91 mph (122.17 km/h) |
| 85 mph (136.79 km/h) | 80.66 mph (129.8 km/h) |
| 90 mph (144.84 km/h) | 85.4 mph (137.44 km/h) |
| 95 mph (152.89 km/h) | 90.15 mph (145.08 km/h) |
| 100 mph (160.93 km/h) | 94.89 mph (152.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2194 | 2549 | 2745 | 2866 | 2997 | 3090 | 3193 | 3314 | 3482 | 3650 | 3837 | 3986 | 4257 | 4556 | 4789 | 4939 | 5023 | 5331 | 5760 | 6694 |
Better Fuel Economy Factory Ratios Increased Power
