Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 225/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 26.17 (664.8) | 7.03 (178.5) 36.7% |
| Width inches (mm) | 6.5 (165) | 8.86 (225) | 2.36 (60) 36.4% |
| Circum. inches (mm) | 60.15 (1527.76) | 82.23 (2088.53) | 22.08 (560.77) 36.7% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 7.09 (180) | 3.51 (89.25) 98.3% |
| Revolutions per mile (km) | 1053.4 (654.55) | 770.56 (478.8) | -282.84 (-175.75) -26.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.34 mph (44 km/h) |
| 25 mph (40.23 km/h) | 34.18 mph (55 km/h) |
| 30 mph (48.28 km/h) | 41.01 mph (66 km/h) |
| 35 mph (56.33 km/h) | 47.85 mph (77 km/h) |
| 40 mph (64.37 km/h) | 54.68 mph (88 km/h) |
| 45 mph (72.42 km/h) | 61.52 mph (99 km/h) |
| 50 mph (80.47 km/h) | 68.35 mph (110 km/h) |
| 55 mph (88.51 km/h) | 75.19 mph (121 km/h) |
| 60 mph (96.56 km/h) | 82.02 mph (132 km/h) |
| 65 mph (104.61 km/h) | 88.86 mph (143 km/h) |
| 70 mph (112.65 km/h) | 95.69 mph (154 km/h) |
| 75 mph (120.7 km/h) | 102.53 mph (165.01 km/h) |
| 80 mph (128.75 km/h) | 109.36 mph (176.01 km/h) |
| 85 mph (136.79 km/h) | 116.2 mph (187.01 km/h) |
| 90 mph (144.84 km/h) | 123.04 mph (198.01 km/h) |
| 95 mph (152.89 km/h) | 129.87 mph (209.01 km/h) |
| 100 mph (160.93 km/h) | 136.71 mph (220.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1961 | 2278 | 2453 | 2562 | 2679 | 2762 | 2854 | 2962 | 3112 | 3263 | 3430 | 3563 | 3805 | 4072 | 4281 | 4414 | 4489 | 4765 | 5148 | 5983 |
Better Fuel Economy Factory Ratios Increased Power
