Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/55-18 | 255/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.61 (726.7) | 30.05 (763.2) | 1.44 (36.5) 5% |
| Width inches (mm) | 9.65 (245) | 10.04 (255) | 0.39 (10) 4.1% |
| Circum. inches (mm) | 89.88 (2283) | 94.4 (2397.66) | 4.51 (114.67) 5% |
| Sidewall Height inches (mm) | 5.31 (134.75) | 6.02 (153) | 0.72 (18.25) 13.5% |
| Revolutions per mile (km) | 704.93 (438.02) | 671.21 (417.07) | -33.71 (-20.95) -4.8% |
255/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21 mph (33.8 km/h) |
| 25 mph (40.23 km/h) | 26.26 mph (42.25 km/h) |
| 30 mph (48.28 km/h) | 31.51 mph (50.71 km/h) |
| 35 mph (56.33 km/h) | 36.76 mph (59.16 km/h) |
| 40 mph (64.37 km/h) | 42.01 mph (67.61 km/h) |
| 45 mph (72.42 km/h) | 47.26 mph (76.06 km/h) |
| 50 mph (80.47 km/h) | 52.51 mph (84.51 km/h) |
| 55 mph (88.51 km/h) | 57.76 mph (92.96 km/h) |
| 60 mph (96.56 km/h) | 63.01 mph (101.41 km/h) |
| 65 mph (104.61 km/h) | 68.26 mph (109.86 km/h) |
| 70 mph (112.65 km/h) | 73.52 mph (118.31 km/h) |
| 75 mph (120.7 km/h) | 78.77 mph (126.76 km/h) |
| 80 mph (128.75 km/h) | 84.02 mph (135.21 km/h) |
| 85 mph (136.79 km/h) | 89.27 mph (143.67 km/h) |
| 90 mph (144.84 km/h) | 94.52 mph (152.12 km/h) |
| 95 mph (152.89 km/h) | 99.77 mph (160.57 km/h) |
| 100 mph (160.93 km/h) | 105.02 mph (169.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1708 | 1984 | 2137 | 2231 | 2333 | 2406 | 2486 | 2580 | 2711 | 2842 | 2987 | 3104 | 3314 | 3547 | 3729 | 3845 | 3910 | 4150 | 4485 | 5212 |
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