Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 125/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 19.87 (504.8) | -0.63 (-16) -3.1% |
| Width inches (mm) | 5.31 (135) | 4.92 (125) | -0.39 (-10) -7.4% |
| Circum. inches (mm) | 64.42 (1636.14) | 62.44 (1585.88) | -1.98 (-50.27) -3.1% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.94 (100) | -0.31 (-8) -7.4% |
| Revolutions per mile (km) | 983.62 (611.19) | 1014.8 (630.57) | 31.18 (19.37) 3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.39 mph (31.2 km/h) |
| 25 mph (40.23 km/h) | 24.23 mph (39 km/h) |
| 30 mph (48.28 km/h) | 29.08 mph (46.8 km/h) |
| 35 mph (56.33 km/h) | 33.92 mph (54.6 km/h) |
| 40 mph (64.37 km/h) | 38.77 mph (62.4 km/h) |
| 45 mph (72.42 km/h) | 43.62 mph (70.2 km/h) |
| 50 mph (80.47 km/h) | 48.46 mph (78 km/h) |
| 55 mph (88.51 km/h) | 53.31 mph (85.79 km/h) |
| 60 mph (96.56 km/h) | 58.16 mph (93.59 km/h) |
| 65 mph (104.61 km/h) | 63 mph (101.39 km/h) |
| 70 mph (112.65 km/h) | 67.85 mph (109.19 km/h) |
| 75 mph (120.7 km/h) | 72.7 mph (116.99 km/h) |
| 80 mph (128.75 km/h) | 77.54 mph (124.79 km/h) |
| 85 mph (136.79 km/h) | 82.39 mph (132.59 km/h) |
| 90 mph (144.84 km/h) | 87.24 mph (140.39 km/h) |
| 95 mph (152.89 km/h) | 92.08 mph (148.19 km/h) |
| 100 mph (160.93 km/h) | 96.93 mph (155.99 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
