Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/65-16 | 255/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27 (685.9) | 29.04 (737.7) | 2.04 (51.8) 7.6% |
| Width inches (mm) | 8.46 (215) | 10.04 (255) | 1.57 (40) 18.6% |
| Circum. inches (mm) | 84.84 (2154.82) | 91.24 (2317.55) | 6.41 (162.73) 7.6% |
| Sidewall Height inches (mm) | 5.5 (139.75) | 5.52 (140.25) | 0.02 (0.5) 0.4% |
| Revolutions per mile (km) | 746.86 (464.08) | 694.42 (431.49) | -52.44 (-32.59) -7% |
255/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.51 mph (34.62 km/h) |
| 25 mph (40.23 km/h) | 26.89 mph (43.27 km/h) |
| 30 mph (48.28 km/h) | 32.27 mph (51.93 km/h) |
| 35 mph (56.33 km/h) | 37.64 mph (60.58 km/h) |
| 40 mph (64.37 km/h) | 43.02 mph (69.24 km/h) |
| 45 mph (72.42 km/h) | 48.4 mph (77.89 km/h) |
| 50 mph (80.47 km/h) | 53.78 mph (86.54 km/h) |
| 55 mph (88.51 km/h) | 59.15 mph (95.2 km/h) |
| 60 mph (96.56 km/h) | 64.53 mph (103.85 km/h) |
| 65 mph (104.61 km/h) | 69.91 mph (112.51 km/h) |
| 70 mph (112.65 km/h) | 75.29 mph (121.16 km/h) |
| 75 mph (120.7 km/h) | 80.66 mph (129.82 km/h) |
| 80 mph (128.75 km/h) | 86.04 mph (138.47 km/h) |
| 85 mph (136.79 km/h) | 91.42 mph (147.13 km/h) |
| 90 mph (144.84 km/h) | 96.8 mph (155.78 km/h) |
| 95 mph (152.89 km/h) | 102.17 mph (164.43 km/h) |
| 100 mph (160.93 km/h) | 107.55 mph (173.09 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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