Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-18 | 245/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.57 (751.2) | 28.61 (726.7) | -0.96 (-24.5) -3.3% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 92.91 (2359.96) | 89.88 (2283) | -3.03 (-76.97) -3.3% |
| Sidewall Height inches (mm) | 5.79 (147) | 5.31 (134.75) | -0.48 (-12.25) -8.3% |
| Revolutions per mile (km) | 681.94 (423.73) | 704.93 (438.02) | 22.99 (14.29) 3.4% |
245/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.35 mph (31.14 km/h) |
| 25 mph (40.23 km/h) | 24.18 mph (38.92 km/h) |
| 30 mph (48.28 km/h) | 29.02 mph (46.71 km/h) |
| 35 mph (56.33 km/h) | 33.86 mph (54.49 km/h) |
| 40 mph (64.37 km/h) | 38.7 mph (62.27 km/h) |
| 45 mph (72.42 km/h) | 43.53 mph (70.06 km/h) |
| 50 mph (80.47 km/h) | 48.37 mph (77.84 km/h) |
| 55 mph (88.51 km/h) | 53.21 mph (85.63 km/h) |
| 60 mph (96.56 km/h) | 58.04 mph (93.41 km/h) |
| 65 mph (104.61 km/h) | 62.88 mph (101.2 km/h) |
| 70 mph (112.65 km/h) | 67.72 mph (108.98 km/h) |
| 75 mph (120.7 km/h) | 72.55 mph (116.76 km/h) |
| 80 mph (128.75 km/h) | 77.39 mph (124.55 km/h) |
| 85 mph (136.79 km/h) | 82.23 mph (132.33 km/h) |
| 90 mph (144.84 km/h) | 87.06 mph (140.12 km/h) |
| 95 mph (152.89 km/h) | 91.9 mph (147.9 km/h) |
| 100 mph (160.93 km/h) | 96.74 mph (155.69 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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