Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/55-18 | 255/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.61 (726.7) | 29.04 (737.7) | 0.43 (11) 1.5% |
| Width inches (mm) | 9.65 (245) | 10.04 (255) | 0.39 (10) 4.1% |
| Circum. inches (mm) | 89.88 (2283) | 91.24 (2317.55) | 1.36 (34.56) 1.5% |
| Sidewall Height inches (mm) | 5.31 (134.75) | 5.52 (140.25) | 0.22 (5.5) 4.1% |
| Revolutions per mile (km) | 704.93 (438.02) | 694.42 (431.49) | -10.51 (-6.53) -1.5% |
255/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.3 mph (32.67 km/h) |
| 25 mph (40.23 km/h) | 25.38 mph (40.84 km/h) |
| 30 mph (48.28 km/h) | 30.45 mph (49.01 km/h) |
| 35 mph (56.33 km/h) | 35.53 mph (57.18 km/h) |
| 40 mph (64.37 km/h) | 40.61 mph (65.35 km/h) |
| 45 mph (72.42 km/h) | 45.68 mph (73.52 km/h) |
| 50 mph (80.47 km/h) | 50.76 mph (81.69 km/h) |
| 55 mph (88.51 km/h) | 55.83 mph (89.85 km/h) |
| 60 mph (96.56 km/h) | 60.91 mph (98.02 km/h) |
| 65 mph (104.61 km/h) | 65.98 mph (106.19 km/h) |
| 70 mph (112.65 km/h) | 71.06 mph (114.36 km/h) |
| 75 mph (120.7 km/h) | 76.14 mph (122.53 km/h) |
| 80 mph (128.75 km/h) | 81.21 mph (130.7 km/h) |
| 85 mph (136.79 km/h) | 86.29 mph (138.87 km/h) |
| 90 mph (144.84 km/h) | 91.36 mph (147.03 km/h) |
| 95 mph (152.89 km/h) | 96.44 mph (155.2 km/h) |
| 100 mph (160.93 km/h) | 101.51 mph (163.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1767 | 2053 | 2211 | 2309 | 2414 | 2489 | 2572 | 2670 | 2805 | 2940 | 3091 | 3211 | 3429 | 3670 | 3858 | 3978 | 4046 | 4294 | 4640 | 5392 |
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