Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-14 | 215/85-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.5 (571.6) | 34.39 (873.5) | 11.89 (301.9) 52.8% |
| Width inches (mm) | 5.31 (135) | 8.46 (215) | 3.15 (80) 59.3% |
| Circum. inches (mm) | 70.7 (1795.73) | 108.04 (2744.18) | 37.34 (948.45) 52.8% |
| Sidewall Height inches (mm) | 4.25 (108) | 7.19 (182.75) | 2.94 (74.75) 69.2% |
| Revolutions per mile (km) | 896.2 (556.87) | 586.46 (364.41) | -309.75 (-192.47) -34.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.56 mph (49.19 km/h) |
| 25 mph (40.23 km/h) | 38.2 mph (61.48 km/h) |
| 30 mph (48.28 km/h) | 45.84 mph (73.78 km/h) |
| 35 mph (56.33 km/h) | 53.49 mph (86.08 km/h) |
| 40 mph (64.37 km/h) | 61.13 mph (98.37 km/h) |
| 45 mph (72.42 km/h) | 68.77 mph (110.67 km/h) |
| 50 mph (80.47 km/h) | 76.41 mph (122.97 km/h) |
| 55 mph (88.51 km/h) | 84.05 mph (135.26 km/h) |
| 60 mph (96.56 km/h) | 91.69 mph (147.56 km/h) |
| 65 mph (104.61 km/h) | 99.33 mph (159.86 km/h) |
| 70 mph (112.65 km/h) | 106.97 mph (172.15 km/h) |
| 75 mph (120.7 km/h) | 114.61 mph (184.45 km/h) |
| 80 mph (128.75 km/h) | 122.25 mph (196.75 km/h) |
| 85 mph (136.79 km/h) | 129.89 mph (209.04 km/h) |
| 90 mph (144.84 km/h) | 137.53 mph (221.34 km/h) |
| 95 mph (152.89 km/h) | 145.18 mph (233.64 km/h) |
| 100 mph (160.93 km/h) | 152.82 mph (245.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1492 | 1734 | 1867 | 1950 | 2039 | 2102 | 2172 | 2255 | 2369 | 2483 | 2610 | 2712 | 2896 | 3099 | 3258 | 3360 | 3417 | 3626 | 3918 | 4553 |
Better Fuel Economy Factory Ratios Increased Power
