Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 205/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 24.91 (632.8) | 5.77 (146.5) 30.1% |
| Width inches (mm) | 6.5 (165) | 8.07 (205) | 1.57 (40) 24.2% |
| Circum. inches (mm) | 60.15 (1527.76) | 78.27 (1988) | 18.12 (460.24) 30.1% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 6.46 (164) | 2.88 (73.25) 80.7% |
| Revolutions per mile (km) | 1053.4 (654.55) | 809.53 (503.02) | -243.87 (-151.54) -23.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.03 mph (41.88 km/h) |
| 25 mph (40.23 km/h) | 32.53 mph (52.35 km/h) |
| 30 mph (48.28 km/h) | 39.04 mph (62.83 km/h) |
| 35 mph (56.33 km/h) | 45.54 mph (73.3 km/h) |
| 40 mph (64.37 km/h) | 52.05 mph (83.77 km/h) |
| 45 mph (72.42 km/h) | 58.56 mph (94.24 km/h) |
| 50 mph (80.47 km/h) | 65.06 mph (104.71 km/h) |
| 55 mph (88.51 km/h) | 71.57 mph (115.18 km/h) |
| 60 mph (96.56 km/h) | 78.08 mph (125.65 km/h) |
| 65 mph (104.61 km/h) | 84.58 mph (136.12 km/h) |
| 70 mph (112.65 km/h) | 91.09 mph (146.59 km/h) |
| 75 mph (120.7 km/h) | 97.59 mph (157.06 km/h) |
| 80 mph (128.75 km/h) | 104.1 mph (167.53 km/h) |
| 85 mph (136.79 km/h) | 110.61 mph (178 km/h) |
| 90 mph (144.84 km/h) | 117.11 mph (188.48 km/h) |
| 95 mph (152.89 km/h) | 123.62 mph (198.95 km/h) |
| 100 mph (160.93 km/h) | 130.13 mph (209.42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2060 | 2393 | 2577 | 2691 | 2814 | 2902 | 2998 | 3112 | 3270 | 3428 | 3603 | 3743 | 3997 | 4278 | 4497 | 4637 | 4716 | 5006 | 5409 | 6285 |
Better Fuel Economy Factory Ratios Increased Power
