Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/55-17 | 175/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.58 (624.3) | 22.58 (573.5) | -2 (-50.8) -8.1% |
| Width inches (mm) | 6.89 (175) | 6.89 (175) | 0 (0) 0% |
| Circum. inches (mm) | 77.22 (1961.3) | 70.93 (1801.7) | -6.28 (-159.59) -8.1% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 3.79 (96.25) | 0 (0) 0% |
| Revolutions per mile (km) | 820.55 (509.87) | 893.23 (555.03) | 72.68 (45.16) 8.9% |
175/55-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.37 mph (29.57 km/h) |
| 25 mph (40.23 km/h) | 22.97 mph (36.96 km/h) |
| 30 mph (48.28 km/h) | 27.56 mph (44.35 km/h) |
| 35 mph (56.33 km/h) | 32.15 mph (51.74 km/h) |
| 40 mph (64.37 km/h) | 36.75 mph (59.14 km/h) |
| 45 mph (72.42 km/h) | 41.34 mph (66.53 km/h) |
| 50 mph (80.47 km/h) | 45.93 mph (73.92 km/h) |
| 55 mph (88.51 km/h) | 50.52 mph (81.31 km/h) |
| 60 mph (96.56 km/h) | 55.12 mph (88.7 km/h) |
| 65 mph (104.61 km/h) | 59.71 mph (96.1 km/h) |
| 70 mph (112.65 km/h) | 64.3 mph (103.49 km/h) |
| 75 mph (120.7 km/h) | 68.9 mph (110.88 km/h) |
| 80 mph (128.75 km/h) | 73.49 mph (118.27 km/h) |
| 85 mph (136.79 km/h) | 78.08 mph (125.66 km/h) |
| 90 mph (144.84 km/h) | 82.68 mph (133.06 km/h) |
| 95 mph (152.89 km/h) | 87.27 mph (140.45 km/h) |
| 100 mph (160.93 km/h) | 91.86 mph (147.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2273 | 2641 | 2844 | 2970 | 3105 | 3202 | 3308 | 3434 | 3608 | 3782 | 3976 | 4130 | 4411 | 4720 | 4962 | 5117 | 5204 | 5523 | 5968 | 6935 |
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