Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-18 | 205/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.77 (629.2) | 23.46 (595.8) | -1.31 (-33.4) -5.3% |
| Width inches (mm) | 8.46 (215) | 8.07 (205) | -0.39 (-10) -4.7% |
| Circum. inches (mm) | 77.82 (1976.69) | 73.69 (1871.76) | -4.13 (-104.93) -5.3% |
| Sidewall Height inches (mm) | 3.39 (86) | 3.23 (82) | -0.16 (-4) -4.7% |
| Revolutions per mile (km) | 814.16 (505.9) | 859.8 (534.26) | 45.64 (28.36) 5.6% |
205/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.94 mph (30.48 km/h) |
| 25 mph (40.23 km/h) | 23.67 mph (38.1 km/h) |
| 30 mph (48.28 km/h) | 28.41 mph (45.72 km/h) |
| 35 mph (56.33 km/h) | 33.14 mph (53.34 km/h) |
| 40 mph (64.37 km/h) | 37.88 mph (60.96 km/h) |
| 45 mph (72.42 km/h) | 42.61 mph (68.58 km/h) |
| 50 mph (80.47 km/h) | 47.35 mph (76.2 km/h) |
| 55 mph (88.51 km/h) | 52.08 mph (83.82 km/h) |
| 60 mph (96.56 km/h) | 56.82 mph (91.44 km/h) |
| 65 mph (104.61 km/h) | 61.55 mph (99.05 km/h) |
| 70 mph (112.65 km/h) | 66.28 mph (106.67 km/h) |
| 75 mph (120.7 km/h) | 71.02 mph (114.29 km/h) |
| 80 mph (128.75 km/h) | 75.75 mph (121.91 km/h) |
| 85 mph (136.79 km/h) | 80.49 mph (129.53 km/h) |
| 90 mph (144.84 km/h) | 85.22 mph (137.15 km/h) |
| 95 mph (152.89 km/h) | 89.96 mph (144.77 km/h) |
| 100 mph (160.93 km/h) | 94.69 mph (152.39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2188 | 2542 | 2737 | 2858 | 2989 | 3082 | 3184 | 3305 | 3473 | 3641 | 3827 | 3976 | 4246 | 4544 | 4776 | 4925 | 5009 | 5316 | 5745 | 6676 |
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