Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 25/10-12 | 270/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25 (635) | 29.01 (736.8) | 4.01 (101.8) 16% |
| Width inches (mm) | 10 (254) | 10.63 (270) | 0.63 (16) 6.3% |
| Circum. inches (mm) | 78.54 (1994.91) | 91.13 (2314.73) | 12.59 (319.81) 16% |
| Sidewall Height inches (mm) | 6.5 (165.1) | 8.5 (216) | 2 (50.9) 30.8% |
| Revolutions per mile (km) | 806.72 (501.27) | 695.26 (432.02) | -111.46 (-69.26) -13.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.21 mph (37.35 km/h) |
| 25 mph (40.23 km/h) | 29.01 mph (46.68 km/h) |
| 30 mph (48.28 km/h) | 34.81 mph (56.02 km/h) |
| 35 mph (56.33 km/h) | 40.61 mph (65.36 km/h) |
| 40 mph (64.37 km/h) | 46.41 mph (74.69 km/h) |
| 45 mph (72.42 km/h) | 52.21 mph (84.03 km/h) |
| 50 mph (80.47 km/h) | 58.02 mph (93.37 km/h) |
| 55 mph (88.51 km/h) | 63.82 mph (102.7 km/h) |
| 60 mph (96.56 km/h) | 69.62 mph (112.04 km/h) |
| 65 mph (104.61 km/h) | 75.42 mph (121.38 km/h) |
| 70 mph (112.65 km/h) | 81.22 mph (130.71 km/h) |
| 75 mph (120.7 km/h) | 87.02 mph (140.05 km/h) |
| 80 mph (128.75 km/h) | 92.83 mph (149.39 km/h) |
| 85 mph (136.79 km/h) | 98.63 mph (158.72 km/h) |
| 90 mph (144.84 km/h) | 104.43 mph (168.06 km/h) |
| 95 mph (152.89 km/h) | 110.23 mph (177.4 km/h) |
| 100 mph (160.93 km/h) | 116.03 mph (186.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1769 | 2055 | 2214 | 2311 | 2417 | 2492 | 2575 | 2673 | 2808 | 2944 | 3094 | 3215 | 3433 | 3674 | 3862 | 3983 | 4051 | 4299 | 4645 | 5398 |
Better Fuel Economy Factory Ratios Increased Power
