Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 140/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 20.82 (528.8) | 0.31 (8) 1.5% |
| Width inches (mm) | 5.31 (135) | 5.51 (140) | 0.2 (5) 3.7% |
| Circum. inches (mm) | 64.42 (1636.14) | 65.4 (1661.27) | 0.99 (25.13) 1.5% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.41 (112) | 0.16 (4) 3.7% |
| Revolutions per mile (km) | 983.62 (611.19) | 968.74 (601.95) | -14.88 (-9.25) -1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.31 mph (32.68 km/h) |
| 25 mph (40.23 km/h) | 25.38 mph (40.85 km/h) |
| 30 mph (48.28 km/h) | 30.46 mph (49.02 km/h) |
| 35 mph (56.33 km/h) | 35.54 mph (57.19 km/h) |
| 40 mph (64.37 km/h) | 40.61 mph (65.36 km/h) |
| 45 mph (72.42 km/h) | 45.69 mph (73.53 km/h) |
| 50 mph (80.47 km/h) | 50.77 mph (81.7 km/h) |
| 55 mph (88.51 km/h) | 55.84 mph (89.87 km/h) |
| 60 mph (96.56 km/h) | 60.92 mph (98.04 km/h) |
| 65 mph (104.61 km/h) | 66 mph (106.21 km/h) |
| 70 mph (112.65 km/h) | 71.08 mph (114.38 km/h) |
| 75 mph (120.7 km/h) | 76.15 mph (122.56 km/h) |
| 80 mph (128.75 km/h) | 81.23 mph (130.73 km/h) |
| 85 mph (136.79 km/h) | 86.31 mph (138.9 km/h) |
| 90 mph (144.84 km/h) | 91.38 mph (147.07 km/h) |
| 95 mph (152.89 km/h) | 96.46 mph (155.24 km/h) |
| 100 mph (160.93 km/h) | 101.54 mph (163.41 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
