Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 190/55-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 20.23 (513.8) | -0.28 (-7) -1.3% |
| Width inches (mm) | 5.31 (135) | 7.48 (190) | 2.17 (55) 40.7% |
| Circum. inches (mm) | 64.42 (1636.14) | 63.55 (1614.15) | -0.87 (-21.99) -1.3% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.11 (104.5) | -0.14 (-3.5) -3.2% |
| Revolutions per mile (km) | 983.62 (611.19) | 997.02 (619.52) | 13.4 (8.33) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.73 mph (31.75 km/h) |
| 25 mph (40.23 km/h) | 24.66 mph (39.69 km/h) |
| 30 mph (48.28 km/h) | 29.6 mph (47.63 km/h) |
| 35 mph (56.33 km/h) | 34.53 mph (55.57 km/h) |
| 40 mph (64.37 km/h) | 39.46 mph (63.51 km/h) |
| 45 mph (72.42 km/h) | 44.4 mph (71.45 km/h) |
| 50 mph (80.47 km/h) | 49.33 mph (79.39 km/h) |
| 55 mph (88.51 km/h) | 54.26 mph (87.32 km/h) |
| 60 mph (96.56 km/h) | 59.19 mph (95.26 km/h) |
| 65 mph (104.61 km/h) | 64.13 mph (103.2 km/h) |
| 70 mph (112.65 km/h) | 69.06 mph (111.14 km/h) |
| 75 mph (120.7 km/h) | 73.99 mph (119.08 km/h) |
| 80 mph (128.75 km/h) | 78.92 mph (127.02 km/h) |
| 85 mph (136.79 km/h) | 83.86 mph (134.96 km/h) |
| 90 mph (144.84 km/h) | 88.79 mph (142.89 km/h) |
| 95 mph (152.89 km/h) | 93.72 mph (150.83 km/h) |
| 100 mph (160.93 km/h) | 98.66 mph (158.77 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
