Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/60-18 | 275/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.99 (787.2) | 29.91 (759.7) | -1.08 (-27.5) -3.5% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 97.36 (2473.06) | 93.96 (2386.67) | -3.4 (-86.39) -3.5% |
| Sidewall Height inches (mm) | 6.5 (165) | 5.95 (151.25) | -0.54 (-13.75) -8.3% |
| Revolutions per mile (km) | 650.75 (404.36) | 674.31 (418.99) | 23.56 (14.64) 3.6% |
275/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.3 mph (31.06 km/h) |
| 25 mph (40.23 km/h) | 24.13 mph (38.83 km/h) |
| 30 mph (48.28 km/h) | 28.95 mph (46.59 km/h) |
| 35 mph (56.33 km/h) | 33.78 mph (54.36 km/h) |
| 40 mph (64.37 km/h) | 38.6 mph (62.13 km/h) |
| 45 mph (72.42 km/h) | 43.43 mph (69.89 km/h) |
| 50 mph (80.47 km/h) | 48.25 mph (77.66 km/h) |
| 55 mph (88.51 km/h) | 53.08 mph (85.42 km/h) |
| 60 mph (96.56 km/h) | 57.9 mph (93.19 km/h) |
| 65 mph (104.61 km/h) | 62.73 mph (100.95 km/h) |
| 70 mph (112.65 km/h) | 67.55 mph (108.72 km/h) |
| 75 mph (120.7 km/h) | 72.38 mph (116.48 km/h) |
| 80 mph (128.75 km/h) | 77.21 mph (124.25 km/h) |
| 85 mph (136.79 km/h) | 82.03 mph (132.02 km/h) |
| 90 mph (144.84 km/h) | 86.86 mph (139.78 km/h) |
| 95 mph (152.89 km/h) | 91.68 mph (147.55 km/h) |
| 100 mph (160.93 km/h) | 96.51 mph (155.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1716 | 1993 | 2147 | 2242 | 2344 | 2417 | 2497 | 2592 | 2724 | 2855 | 3001 | 3118 | 3330 | 3563 | 3746 | 3863 | 3928 | 4169 | 4505 | 5236 |
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