Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/55-18 | 245/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.18 (715.7) | 28.61 (726.7) | 0.43 (11) 1.5% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 88.52 (2248.44) | 89.88 (2283) | 1.36 (34.56) 1.5% |
| Sidewall Height inches (mm) | 5.09 (129.25) | 5.31 (134.75) | 0.22 (5.5) 4.3% |
| Revolutions per mile (km) | 715.76 (444.75) | 704.93 (438.02) | -10.83 (-6.73) -1.5% |
245/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.31 mph (32.68 km/h) |
| 25 mph (40.23 km/h) | 25.38 mph (40.85 km/h) |
| 30 mph (48.28 km/h) | 30.46 mph (49.02 km/h) |
| 35 mph (56.33 km/h) | 35.54 mph (57.19 km/h) |
| 40 mph (64.37 km/h) | 40.61 mph (65.36 km/h) |
| 45 mph (72.42 km/h) | 45.69 mph (73.53 km/h) |
| 50 mph (80.47 km/h) | 50.77 mph (81.7 km/h) |
| 55 mph (88.51 km/h) | 55.85 mph (89.87 km/h) |
| 60 mph (96.56 km/h) | 60.92 mph (98.04 km/h) |
| 65 mph (104.61 km/h) | 66 mph (106.22 km/h) |
| 70 mph (112.65 km/h) | 71.08 mph (114.39 km/h) |
| 75 mph (120.7 km/h) | 76.15 mph (122.56 km/h) |
| 80 mph (128.75 km/h) | 81.23 mph (130.73 km/h) |
| 85 mph (136.79 km/h) | 86.31 mph (138.9 km/h) |
| 90 mph (144.84 km/h) | 91.38 mph (147.07 km/h) |
| 95 mph (152.89 km/h) | 96.46 mph (155.24 km/h) |
| 100 mph (160.93 km/h) | 101.54 mph (163.41 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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