Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 135/60-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 18.38 (466.8) | -2.13 (-54) -10.4% |
| Width inches (mm) | 5.31 (135) | 5.31 (135) | 0 (0) 0% |
| Circum. inches (mm) | 64.42 (1636.14) | 57.74 (1466.5) | -6.68 (-169.65) -10.4% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.19 (81) | -1.06 (-27) -25% |
| Revolutions per mile (km) | 983.62 (611.19) | 1097.41 (681.9) | 113.79 (70.7) 11.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.93 mph (28.85 km/h) |
| 25 mph (40.23 km/h) | 22.41 mph (36.06 km/h) |
| 30 mph (48.28 km/h) | 26.89 mph (43.27 km/h) |
| 35 mph (56.33 km/h) | 31.37 mph (50.49 km/h) |
| 40 mph (64.37 km/h) | 35.85 mph (57.7 km/h) |
| 45 mph (72.42 km/h) | 40.33 mph (64.91 km/h) |
| 50 mph (80.47 km/h) | 44.82 mph (72.12 km/h) |
| 55 mph (88.51 km/h) | 49.3 mph (79.34 km/h) |
| 60 mph (96.56 km/h) | 53.78 mph (86.55 km/h) |
| 65 mph (104.61 km/h) | 58.26 mph (93.76 km/h) |
| 70 mph (112.65 km/h) | 62.74 mph (100.97 km/h) |
| 75 mph (120.7 km/h) | 67.22 mph (108.19 km/h) |
| 80 mph (128.75 km/h) | 71.71 mph (115.4 km/h) |
| 85 mph (136.79 km/h) | 76.19 mph (122.61 km/h) |
| 90 mph (144.84 km/h) | 80.67 mph (129.82 km/h) |
| 95 mph (152.89 km/h) | 85.15 mph (137.04 km/h) |
| 100 mph (160.93 km/h) | 89.63 mph (144.25 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
