Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/35-20 | 225/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.2 (665.5) | 27.09 (688) | 0.89 (22.5) 3.4% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 82.31 (2090.73) | 85.1 (2161.42) | 2.78 (70.69) 3.4% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.54 (90) | 0.44 (11.25) 14.3% |
| Revolutions per mile (km) | 769.75 (478.3) | 744.58 (462.66) | -25.17 (-15.64) -3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.28 km/h) |
| 25 mph (40.23 km/h) | 25.85 mph (41.59 km/h) |
| 30 mph (48.28 km/h) | 31.01 mph (49.91 km/h) |
| 35 mph (56.33 km/h) | 36.18 mph (58.23 km/h) |
| 40 mph (64.37 km/h) | 41.35 mph (66.55 km/h) |
| 45 mph (72.42 km/h) | 46.52 mph (74.87 km/h) |
| 50 mph (80.47 km/h) | 51.69 mph (83.19 km/h) |
| 55 mph (88.51 km/h) | 56.86 mph (91.51 km/h) |
| 60 mph (96.56 km/h) | 62.03 mph (99.83 km/h) |
| 65 mph (104.61 km/h) | 67.2 mph (108.14 km/h) |
| 70 mph (112.65 km/h) | 72.37 mph (116.46 km/h) |
| 75 mph (120.7 km/h) | 77.54 mph (124.78 km/h) |
| 80 mph (128.75 km/h) | 82.7 mph (133.1 km/h) |
| 85 mph (136.79 km/h) | 87.87 mph (141.42 km/h) |
| 90 mph (144.84 km/h) | 93.04 mph (149.74 km/h) |
| 95 mph (152.89 km/h) | 98.21 mph (158.06 km/h) |
| 100 mph (160.93 km/h) | 103.38 mph (166.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1895 | 2201 | 2371 | 2475 | 2588 | 2669 | 2758 | 2862 | 3008 | 3153 | 3314 | 3443 | 3677 | 3935 | 4136 | 4265 | 4338 | 4604 | 4975 | 5781 |
Better Fuel Economy Factory Ratios Increased Power
