Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-13 | 245/55-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.97 (532.7) | 23.61 (599.7) | 2.64 (67) 12.6% |
| Width inches (mm) | 8.86 (225) | 9.65 (245) | 0.79 (20) 8.9% |
| Circum. inches (mm) | 65.89 (1673.53) | 74.17 (1884.01) | 8.29 (210.49) 12.6% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 5.31 (134.75) | 1.32 (33.5) 33.1% |
| Revolutions per mile (km) | 961.65 (597.54) | 854.21 (530.78) | -107.44 (-66.76) -11.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.52 mph (36.24 km/h) |
| 25 mph (40.23 km/h) | 28.14 mph (45.29 km/h) |
| 30 mph (48.28 km/h) | 33.77 mph (54.35 km/h) |
| 35 mph (56.33 km/h) | 39.4 mph (63.41 km/h) |
| 40 mph (64.37 km/h) | 45.03 mph (72.47 km/h) |
| 45 mph (72.42 km/h) | 50.66 mph (81.53 km/h) |
| 50 mph (80.47 km/h) | 56.29 mph (90.59 km/h) |
| 55 mph (88.51 km/h) | 61.92 mph (99.65 km/h) |
| 60 mph (96.56 km/h) | 67.55 mph (108.71 km/h) |
| 65 mph (104.61 km/h) | 73.18 mph (117.76 km/h) |
| 70 mph (112.65 km/h) | 78.8 mph (126.82 km/h) |
| 75 mph (120.7 km/h) | 84.43 mph (135.88 km/h) |
| 80 mph (128.75 km/h) | 90.06 mph (144.94 km/h) |
| 85 mph (136.79 km/h) | 95.69 mph (154 km/h) |
| 90 mph (144.84 km/h) | 101.32 mph (163.06 km/h) |
| 95 mph (152.89 km/h) | 106.95 mph (172.12 km/h) |
| 100 mph (160.93 km/h) | 112.58 mph (181.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2174 | 2525 | 2720 | 2840 | 2969 | 3062 | 3164 | 3284 | 3450 | 3617 | 3802 | 3950 | 4218 | 4514 | 4745 | 4893 | 4977 | 5282 | 5707 | 6632 |
Better Fuel Economy Factory Ratios Increased Power
