Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/55-19 | 245/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.74 (730.1) | 28.61 (726.7) | -0.13 (-3.4) -0.5% |
| Width inches (mm) | 8.86 (225) | 9.65 (245) | 0.79 (20) 8.9% |
| Circum. inches (mm) | 90.3 (2293.68) | 89.88 (2283) | -0.42 (-10.68) -0.5% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 5.31 (134.75) | 0.43 (11) 8.9% |
| Revolutions per mile (km) | 701.64 (435.98) | 704.93 (438.02) | 3.28 (2.04) 0.5% |
245/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.91 mph (32.04 km/h) |
| 25 mph (40.23 km/h) | 24.88 mph (40.05 km/h) |
| 30 mph (48.28 km/h) | 29.86 mph (48.06 km/h) |
| 35 mph (56.33 km/h) | 34.84 mph (56.06 km/h) |
| 40 mph (64.37 km/h) | 39.81 mph (64.07 km/h) |
| 45 mph (72.42 km/h) | 44.79 mph (72.08 km/h) |
| 50 mph (80.47 km/h) | 49.77 mph (80.09 km/h) |
| 55 mph (88.51 km/h) | 54.74 mph (88.1 km/h) |
| 60 mph (96.56 km/h) | 59.72 mph (96.11 km/h) |
| 65 mph (104.61 km/h) | 64.7 mph (104.12 km/h) |
| 70 mph (112.65 km/h) | 69.67 mph (112.13 km/h) |
| 75 mph (120.7 km/h) | 74.65 mph (120.14 km/h) |
| 80 mph (128.75 km/h) | 79.63 mph (128.15 km/h) |
| 85 mph (136.79 km/h) | 84.6 mph (136.16 km/h) |
| 90 mph (144.84 km/h) | 89.58 mph (144.17 km/h) |
| 95 mph (152.89 km/h) | 94.56 mph (152.18 km/h) |
| 100 mph (160.93 km/h) | 99.53 mph (160.19 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1794 | 2084 | 2244 | 2344 | 2450 | 2527 | 2611 | 2710 | 2847 | 2985 | 3137 | 3260 | 3481 | 3725 | 3916 | 4038 | 4107 | 4359 | 4710 | 5473 |
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