Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/75-12 | 225/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.29 (642.3) | 26.17 (664.8) | 0.89 (22.5) 3.5% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 79.44 (2017.84) | 82.23 (2088.53) | 2.78 (70.69) 3.5% |
| Sidewall Height inches (mm) | 6.64 (168.75) | 7.09 (180) | 0.44 (11.25) 6.7% |
| Revolutions per mile (km) | 797.56 (495.58) | 770.56 (478.8) | -26.99 (-16.77) -3.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.7 mph (33.31 km/h) |
| 25 mph (40.23 km/h) | 25.88 mph (41.64 km/h) |
| 30 mph (48.28 km/h) | 31.05 mph (49.97 km/h) |
| 35 mph (56.33 km/h) | 36.23 mph (58.3 km/h) |
| 40 mph (64.37 km/h) | 41.4 mph (66.63 km/h) |
| 45 mph (72.42 km/h) | 46.58 mph (74.96 km/h) |
| 50 mph (80.47 km/h) | 51.75 mph (83.29 km/h) |
| 55 mph (88.51 km/h) | 56.93 mph (91.61 km/h) |
| 60 mph (96.56 km/h) | 62.1 mph (99.94 km/h) |
| 65 mph (104.61 km/h) | 67.28 mph (108.27 km/h) |
| 70 mph (112.65 km/h) | 72.45 mph (116.6 km/h) |
| 75 mph (120.7 km/h) | 77.63 mph (124.93 km/h) |
| 80 mph (128.75 km/h) | 82.8 mph (133.26 km/h) |
| 85 mph (136.79 km/h) | 87.98 mph (141.59 km/h) |
| 90 mph (144.84 km/h) | 93.15 mph (149.92 km/h) |
| 95 mph (152.89 km/h) | 98.33 mph (158.24 km/h) |
| 100 mph (160.93 km/h) | 103.5 mph (166.57 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
