Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/65-14 | 185/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.44 (570.1) | 23.01 (584.5) | 0.57 (14.4) 2.5% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 70.51 (1791.02) | 72.29 (1836.26) | 1.78 (45.24) 2.5% |
| Sidewall Height inches (mm) | 4.22 (107.25) | 4.01 (101.75) | -0.22 (-5.5) -5.1% |
| Revolutions per mile (km) | 898.56 (558.34) | 876.42 (544.58) | -22.14 (-13.76) -2.5% |
185/55-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.51 mph (33 km/h) |
| 25 mph (40.23 km/h) | 25.63 mph (41.25 km/h) |
| 30 mph (48.28 km/h) | 30.76 mph (49.5 km/h) |
| 35 mph (56.33 km/h) | 35.88 mph (57.75 km/h) |
| 40 mph (64.37 km/h) | 41.01 mph (66 km/h) |
| 45 mph (72.42 km/h) | 46.14 mph (74.25 km/h) |
| 50 mph (80.47 km/h) | 51.26 mph (82.5 km/h) |
| 55 mph (88.51 km/h) | 56.39 mph (90.75 km/h) |
| 60 mph (96.56 km/h) | 61.52 mph (99 km/h) |
| 65 mph (104.61 km/h) | 66.64 mph (107.25 km/h) |
| 70 mph (112.65 km/h) | 71.77 mph (115.5 km/h) |
| 75 mph (120.7 km/h) | 76.89 mph (123.75 km/h) |
| 80 mph (128.75 km/h) | 82.02 mph (132 km/h) |
| 85 mph (136.79 km/h) | 87.15 mph (140.25 km/h) |
| 90 mph (144.84 km/h) | 92.27 mph (148.5 km/h) |
| 95 mph (152.89 km/h) | 97.4 mph (156.75 km/h) |
| 100 mph (160.93 km/h) | 102.53 mph (165 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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