Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-14 | 185/45-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.5 (571.6) | 20.56 (522.1) | -1.95 (-49.5) -8.7% |
| Width inches (mm) | 5.31 (135) | 7.28 (185) | 1.97 (50) 37% |
| Circum. inches (mm) | 70.7 (1795.73) | 64.58 (1640.23) | -6.12 (-155.51) -8.7% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.28 (83.25) | -0.97 (-24.75) -22.9% |
| Revolutions per mile (km) | 896.2 (556.87) | 981.17 (609.67) | 84.97 (52.8) 9.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.27 mph (29.4 km/h) |
| 25 mph (40.23 km/h) | 22.84 mph (36.75 km/h) |
| 30 mph (48.28 km/h) | 27.4 mph (44.1 km/h) |
| 35 mph (56.33 km/h) | 31.97 mph (51.45 km/h) |
| 40 mph (64.37 km/h) | 36.54 mph (58.8 km/h) |
| 45 mph (72.42 km/h) | 41.1 mph (66.15 km/h) |
| 50 mph (80.47 km/h) | 45.67 mph (73.5 km/h) |
| 55 mph (88.51 km/h) | 50.24 mph (80.85 km/h) |
| 60 mph (96.56 km/h) | 54.8 mph (88.2 km/h) |
| 65 mph (104.61 km/h) | 59.37 mph (95.55 km/h) |
| 70 mph (112.65 km/h) | 63.94 mph (102.9 km/h) |
| 75 mph (120.7 km/h) | 68.51 mph (110.25 km/h) |
| 80 mph (128.75 km/h) | 73.07 mph (117.6 km/h) |
| 85 mph (136.79 km/h) | 77.64 mph (124.95 km/h) |
| 90 mph (144.84 km/h) | 82.21 mph (132.3 km/h) |
| 95 mph (152.89 km/h) | 86.77 mph (139.65 km/h) |
| 100 mph (160.93 km/h) | 91.34 mph (147 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
