Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/80-13 | 205/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.65 (626.2) | 25.91 (658.2) | 1.26 (32) 5.1% |
| Width inches (mm) | 7.28 (185) | 8.07 (205) | 0.79 (20) 10.8% |
| Circum. inches (mm) | 77.45 (1967.27) | 81.41 (2067.8) | 3.96 (100.53) 5.1% |
| Sidewall Height inches (mm) | 5.83 (148) | 6.46 (164) | 0.63 (16) 10.8% |
| Revolutions per mile (km) | 818.06 (508.32) | 778.29 (483.61) | -39.77 (-24.71) -4.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.02 mph (33.83 km/h) |
| 25 mph (40.23 km/h) | 26.28 mph (42.29 km/h) |
| 30 mph (48.28 km/h) | 31.53 mph (50.75 km/h) |
| 35 mph (56.33 km/h) | 36.79 mph (59.21 km/h) |
| 40 mph (64.37 km/h) | 42.04 mph (67.66 km/h) |
| 45 mph (72.42 km/h) | 47.3 mph (76.12 km/h) |
| 50 mph (80.47 km/h) | 52.56 mph (84.58 km/h) |
| 55 mph (88.51 km/h) | 57.81 mph (93.04 km/h) |
| 60 mph (96.56 km/h) | 63.07 mph (101.5 km/h) |
| 65 mph (104.61 km/h) | 68.32 mph (109.95 km/h) |
| 70 mph (112.65 km/h) | 73.58 mph (118.41 km/h) |
| 75 mph (120.7 km/h) | 78.83 mph (126.87 km/h) |
| 80 mph (128.75 km/h) | 84.09 mph (135.33 km/h) |
| 85 mph (136.79 km/h) | 89.34 mph (143.78 km/h) |
| 90 mph (144.84 km/h) | 94.6 mph (152.24 km/h) |
| 95 mph (152.89 km/h) | 99.85 mph (160.7 km/h) |
| 100 mph (160.93 km/h) | 105.11 mph (169.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 2301 | 2478 | 2587 | 2705 | 2790 | 2882 | 2992 | 3144 | 3295 | 3464 | 3599 | 3843 | 4113 | 4324 | 4458 | 4534 | 4812 | 5200 | 6043 |
Better Fuel Economy Factory Ratios Increased Power
