Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/65-15 | 185/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.98 (634.5) | 23.01 (584.5) | -1.97 (-50) -7.9% |
| Width inches (mm) | 7.68 (195) | 7.28 (185) | -0.39 (-10) -5.1% |
| Circum. inches (mm) | 78.48 (1993.34) | 72.29 (1836.26) | -6.18 (-157.08) -7.9% |
| Sidewall Height inches (mm) | 4.99 (126.75) | 4.01 (101.75) | -0.98 (-25) -19.7% |
| Revolutions per mile (km) | 807.36 (501.67) | 876.42 (544.58) | 69.06 (42.91) 8.6% |
185/55-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.42 mph (29.65 km/h) |
| 25 mph (40.23 km/h) | 23.03 mph (37.06 km/h) |
| 30 mph (48.28 km/h) | 27.64 mph (44.48 km/h) |
| 35 mph (56.33 km/h) | 32.24 mph (51.89 km/h) |
| 40 mph (64.37 km/h) | 36.85 mph (59.3 km/h) |
| 45 mph (72.42 km/h) | 41.45 mph (66.71 km/h) |
| 50 mph (80.47 km/h) | 46.06 mph (74.13 km/h) |
| 55 mph (88.51 km/h) | 50.67 mph (81.54 km/h) |
| 60 mph (96.56 km/h) | 55.27 mph (88.95 km/h) |
| 65 mph (104.61 km/h) | 59.88 mph (96.36 km/h) |
| 70 mph (112.65 km/h) | 64.48 mph (103.78 km/h) |
| 75 mph (120.7 km/h) | 69.09 mph (111.19 km/h) |
| 80 mph (128.75 km/h) | 73.7 mph (118.6 km/h) |
| 85 mph (136.79 km/h) | 78.3 mph (126.01 km/h) |
| 90 mph (144.84 km/h) | 82.91 mph (133.43 km/h) |
| 95 mph (152.89 km/h) | 87.51 mph (140.84 km/h) |
| 100 mph (160.93 km/h) | 92.12 mph (148.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2230 | 2591 | 2790 | 2914 | 3047 | 3141 | 3246 | 3369 | 3540 | 3711 | 3901 | 4053 | 4328 | 4631 | 4869 | 5021 | 5106 | 5419 | 5856 | 6805 |
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