Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-19 | 215/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.54 (699.6) | 25.62 (650.7) | -1.93 (-48.9) -7% |
| Width inches (mm) | 6.1 (155) | 8.46 (215) | 2.36 (60) 38.7% |
| Circum. inches (mm) | 86.53 (2197.86) | 80.48 (2044.23) | -6.05 (-153.62) -7% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 3.81 (96.75) | -0.46 (-11.75) -10.8% |
| Revolutions per mile (km) | 732.23 (454.99) | 787.26 (489.18) | 55.03 (34.19) 7.5% |
215/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.6 mph (29.94 km/h) |
| 25 mph (40.23 km/h) | 23.25 mph (37.42 km/h) |
| 30 mph (48.28 km/h) | 27.9 mph (44.91 km/h) |
| 35 mph (56.33 km/h) | 32.55 mph (52.39 km/h) |
| 40 mph (64.37 km/h) | 37.2 mph (59.87 km/h) |
| 45 mph (72.42 km/h) | 41.85 mph (67.36 km/h) |
| 50 mph (80.47 km/h) | 46.51 mph (74.84 km/h) |
| 55 mph (88.51 km/h) | 51.16 mph (82.33 km/h) |
| 60 mph (96.56 km/h) | 55.81 mph (89.81 km/h) |
| 65 mph (104.61 km/h) | 60.46 mph (97.3 km/h) |
| 70 mph (112.65 km/h) | 65.11 mph (104.78 km/h) |
| 75 mph (120.7 km/h) | 69.76 mph (112.26 km/h) |
| 80 mph (128.75 km/h) | 74.41 mph (119.75 km/h) |
| 85 mph (136.79 km/h) | 79.06 mph (127.23 km/h) |
| 90 mph (144.84 km/h) | 83.71 mph (134.72 km/h) |
| 95 mph (152.89 km/h) | 88.36 mph (142.2 km/h) |
| 100 mph (160.93 km/h) | 93.01 mph (149.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | 2327 | 2506 | 2617 | 2737 | 2822 | 2916 | 3026 | 3180 | 3333 | 3504 | 3640 | 3887 | 4160 | 4373 | 4510 | 4587 | 4868 | 5260 | 6113 |
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