Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/35-20 | 225/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.2 (665.5) | 27.97 (710.5) | 1.77 (45) 6.8% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 82.31 (2090.73) | 87.88 (2232.1) | 5.57 (141.37) 6.8% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.99 (101.25) | 0.89 (22.5) 28.6% |
| Revolutions per mile (km) | 769.75 (478.3) | 721 (448.01) | -48.75 (-30.29) -6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.35 mph (34.36 km/h) |
| 25 mph (40.23 km/h) | 26.69 mph (42.95 km/h) |
| 30 mph (48.28 km/h) | 32.03 mph (51.55 km/h) |
| 35 mph (56.33 km/h) | 37.37 mph (60.14 km/h) |
| 40 mph (64.37 km/h) | 42.7 mph (68.73 km/h) |
| 45 mph (72.42 km/h) | 48.04 mph (77.32 km/h) |
| 50 mph (80.47 km/h) | 53.38 mph (85.91 km/h) |
| 55 mph (88.51 km/h) | 58.72 mph (94.5 km/h) |
| 60 mph (96.56 km/h) | 64.06 mph (103.09 km/h) |
| 65 mph (104.61 km/h) | 69.4 mph (111.68 km/h) |
| 70 mph (112.65 km/h) | 74.73 mph (120.27 km/h) |
| 75 mph (120.7 km/h) | 80.07 mph (128.86 km/h) |
| 80 mph (128.75 km/h) | 85.41 mph (137.45 km/h) |
| 85 mph (136.79 km/h) | 90.75 mph (146.04 km/h) |
| 90 mph (144.84 km/h) | 96.09 mph (154.64 km/h) |
| 95 mph (152.89 km/h) | 101.42 mph (163.23 km/h) |
| 100 mph (160.93 km/h) | 106.76 mph (171.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1835 | 2131 | 2295 | 2397 | 2506 | 2584 | 2670 | 2772 | 2912 | 3053 | 3209 | 3334 | 3560 | 3810 | 4005 | 4130 | 4201 | 4458 | 4817 | 5598 |
Better Fuel Economy Factory Ratios Increased Power
