Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-13 | 235/40-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.97 (532.7) | 20.4 (518.2) | -0.57 (-14.5) -2.7% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 65.89 (1673.53) | 64.09 (1627.97) | -1.79 (-45.55) -2.7% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 3.7 (94) | -0.29 (-7.25) -7.2% |
| Revolutions per mile (km) | 961.65 (597.54) | 988.56 (614.26) | 26.91 (16.72) 2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.46 mph (31.31 km/h) |
| 25 mph (40.23 km/h) | 24.32 mph (39.14 km/h) |
| 30 mph (48.28 km/h) | 29.18 mph (46.97 km/h) |
| 35 mph (56.33 km/h) | 34.05 mph (54.79 km/h) |
| 40 mph (64.37 km/h) | 38.91 mph (62.62 km/h) |
| 45 mph (72.42 km/h) | 43.78 mph (70.45 km/h) |
| 50 mph (80.47 km/h) | 48.64 mph (78.28 km/h) |
| 55 mph (88.51 km/h) | 53.5 mph (86.1 km/h) |
| 60 mph (96.56 km/h) | 58.37 mph (93.93 km/h) |
| 65 mph (104.61 km/h) | 63.23 mph (101.76 km/h) |
| 70 mph (112.65 km/h) | 68.09 mph (109.59 km/h) |
| 75 mph (120.7 km/h) | 72.96 mph (117.42 km/h) |
| 80 mph (128.75 km/h) | 77.82 mph (125.24 km/h) |
| 85 mph (136.79 km/h) | 82.69 mph (133.07 km/h) |
| 90 mph (144.84 km/h) | 87.55 mph (140.9 km/h) |
| 95 mph (152.89 km/h) | 92.41 mph (148.73 km/h) |
| 100 mph (160.93 km/h) | 97.28 mph (156.55 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
