Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-18 | 215/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.54 (674.2) | 27.31 (693.7) | 0.77 (19.5) 2.9% |
| Width inches (mm) | 6.1 (155) | 8.46 (215) | 2.36 (60) 38.7% |
| Circum. inches (mm) | 83.39 (2118.06) | 85.8 (2179.32) | 2.41 (61.26) 2.9% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.66 (118.25) | 0.38 (9.75) 9% |
| Revolutions per mile (km) | 759.82 (472.13) | 738.46 (458.86) | -21.36 (-13.27) -2.8% |
215/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.58 mph (33.12 km/h) |
| 25 mph (40.23 km/h) | 25.72 mph (41.4 km/h) |
| 30 mph (48.28 km/h) | 30.87 mph (49.68 km/h) |
| 35 mph (56.33 km/h) | 36.01 mph (57.96 km/h) |
| 40 mph (64.37 km/h) | 41.16 mph (66.24 km/h) |
| 45 mph (72.42 km/h) | 46.3 mph (74.52 km/h) |
| 50 mph (80.47 km/h) | 51.45 mph (82.79 km/h) |
| 55 mph (88.51 km/h) | 56.59 mph (91.07 km/h) |
| 60 mph (96.56 km/h) | 61.74 mph (99.35 km/h) |
| 65 mph (104.61 km/h) | 66.88 mph (107.63 km/h) |
| 70 mph (112.65 km/h) | 72.02 mph (115.91 km/h) |
| 75 mph (120.7 km/h) | 77.17 mph (124.19 km/h) |
| 80 mph (128.75 km/h) | 82.31 mph (132.47 km/h) |
| 85 mph (136.79 km/h) | 87.46 mph (140.75 km/h) |
| 90 mph (144.84 km/h) | 92.6 mph (149.03 km/h) |
| 95 mph (152.89 km/h) | 97.75 mph (157.31 km/h) |
| 100 mph (160.93 km/h) | 102.89 mph (165.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1879 | 2183 | 2351 | 2455 | 2567 | 2647 | 2735 | 2839 | 2983 | 3127 | 3287 | 3415 | 3647 | 3902 | 4102 | 4230 | 4302 | 4566 | 4934 | 5734 |
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