Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 155/25-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 18.05 (458.5) | -2.45 (-62.3) -12% |
| Width inches (mm) | 5.31 (135) | 6.1 (155) | 0.79 (20) 14.8% |
| Circum. inches (mm) | 64.42 (1636.14) | 56.71 (1440.42) | -7.71 (-195.72) -12% |
| Sidewall Height inches (mm) | 4.25 (108) | 1.53 (38.75) | -2.73 (-69.25) -64.1% |
| Revolutions per mile (km) | 983.62 (611.19) | 1117.27 (694.24) | 133.65 (83.05) 13.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.61 mph (28.34 km/h) |
| 25 mph (40.23 km/h) | 22.01 mph (35.42 km/h) |
| 30 mph (48.28 km/h) | 26.41 mph (42.5 km/h) |
| 35 mph (56.33 km/h) | 30.81 mph (49.59 km/h) |
| 40 mph (64.37 km/h) | 35.22 mph (56.67 km/h) |
| 45 mph (72.42 km/h) | 39.62 mph (63.76 km/h) |
| 50 mph (80.47 km/h) | 44.02 mph (70.84 km/h) |
| 55 mph (88.51 km/h) | 48.42 mph (77.93 km/h) |
| 60 mph (96.56 km/h) | 52.82 mph (85.01 km/h) |
| 65 mph (104.61 km/h) | 57.22 mph (92.09 km/h) |
| 70 mph (112.65 km/h) | 61.63 mph (99.18 km/h) |
| 75 mph (120.7 km/h) | 66.03 mph (106.26 km/h) |
| 80 mph (128.75 km/h) | 70.43 mph (113.35 km/h) |
| 85 mph (136.79 km/h) | 74.83 mph (120.43 km/h) |
| 90 mph (144.84 km/h) | 79.23 mph (127.51 km/h) |
| 95 mph (152.89 km/h) | 83.64 mph (134.6 km/h) |
| 100 mph (160.93 km/h) | 88.04 mph (141.68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
