Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-19 | 215/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.77 (654.6) | 27.31 (693.7) | 1.54 (39.1) 6% |
| Width inches (mm) | 8.46 (215) | 8.46 (215) | 0 (0) 0% |
| Circum. inches (mm) | 80.96 (2056.49) | 85.8 (2179.32) | 4.84 (122.84) 6% |
| Sidewall Height inches (mm) | 3.39 (86) | 4.66 (118.25) | 1.27 (32.25) 37.5% |
| Revolutions per mile (km) | 782.57 (486.27) | 738.46 (458.86) | -44.11 (-27.41) -5.6% |
215/55-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.19 mph (34.11 km/h) |
| 25 mph (40.23 km/h) | 26.49 mph (42.64 km/h) |
| 30 mph (48.28 km/h) | 31.79 mph (51.16 km/h) |
| 35 mph (56.33 km/h) | 37.09 mph (59.69 km/h) |
| 40 mph (64.37 km/h) | 42.39 mph (68.22 km/h) |
| 45 mph (72.42 km/h) | 47.69 mph (76.75 km/h) |
| 50 mph (80.47 km/h) | 52.99 mph (85.27 km/h) |
| 55 mph (88.51 km/h) | 58.29 mph (93.8 km/h) |
| 60 mph (96.56 km/h) | 63.58 mph (102.33 km/h) |
| 65 mph (104.61 km/h) | 68.88 mph (110.86 km/h) |
| 70 mph (112.65 km/h) | 74.18 mph (119.38 km/h) |
| 75 mph (120.7 km/h) | 79.48 mph (127.91 km/h) |
| 80 mph (128.75 km/h) | 84.78 mph (136.44 km/h) |
| 85 mph (136.79 km/h) | 90.08 mph (144.97 km/h) |
| 90 mph (144.84 km/h) | 95.38 mph (153.49 km/h) |
| 95 mph (152.89 km/h) | 100.67 mph (162.02 km/h) |
| 100 mph (160.93 km/h) | 105.97 mph (170.55 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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