Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-15 | 215/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.47 (621.5) | 23.77 (603.8) | -0.7 (-17.7) -2.8% |
| Width inches (mm) | 7.28 (185) | 8.46 (215) | 1.18 (30) 16.2% |
| Circum. inches (mm) | 76.87 (1952.5) | 74.68 (1896.89) | -2.19 (-55.61) -2.8% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 3.39 (86) | -1.35 (-34.25) -28.5% |
| Revolutions per mile (km) | 824.25 (512.16) | 848.41 (527.18) | 24.16 (15.01) 2.9% |
215/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.43 mph (31.27 km/h) |
| 25 mph (40.23 km/h) | 24.29 mph (39.09 km/h) |
| 30 mph (48.28 km/h) | 29.15 mph (46.91 km/h) |
| 35 mph (56.33 km/h) | 34 mph (54.72 km/h) |
| 40 mph (64.37 km/h) | 38.86 mph (62.54 km/h) |
| 45 mph (72.42 km/h) | 43.72 mph (70.36 km/h) |
| 50 mph (80.47 km/h) | 48.58 mph (78.18 km/h) |
| 55 mph (88.51 km/h) | 53.43 mph (85.99 km/h) |
| 60 mph (96.56 km/h) | 58.29 mph (93.81 km/h) |
| 65 mph (104.61 km/h) | 63.15 mph (101.63 km/h) |
| 70 mph (112.65 km/h) | 68.01 mph (109.45 km/h) |
| 75 mph (120.7 km/h) | 72.86 mph (117.26 km/h) |
| 80 mph (128.75 km/h) | 77.72 mph (125.08 km/h) |
| 85 mph (136.79 km/h) | 82.58 mph (132.9 km/h) |
| 90 mph (144.84 km/h) | 87.44 mph (140.72 km/h) |
| 95 mph (152.89 km/h) | 92.29 mph (148.53 km/h) |
| 100 mph (160.93 km/h) | 97.15 mph (156.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2159 | 2508 | 2701 | 2821 | 2949 | 3041 | 3142 | 3262 | 3427 | 3592 | 3776 | 3923 | 4189 | 4483 | 4713 | 4860 | 4943 | 5246 | 5669 | 6587 |
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