Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-15 | 185/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.93 (658.5) | 24.47 (621.5) | -1.46 (-37) -5.6% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 81.45 (2068.74) | 76.87 (1952.5) | -4.58 (-116.24) -5.6% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 4.73 (120.25) | -0.73 (-18.5) -13.3% |
| Revolutions per mile (km) | 777.93 (483.39) | 824.25 (512.16) | 46.31 (28.78) 6% |
185/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.88 mph (30.38 km/h) |
| 25 mph (40.23 km/h) | 23.6 mph (37.97 km/h) |
| 30 mph (48.28 km/h) | 28.31 mph (45.57 km/h) |
| 35 mph (56.33 km/h) | 33.03 mph (53.16 km/h) |
| 40 mph (64.37 km/h) | 37.75 mph (60.76 km/h) |
| 45 mph (72.42 km/h) | 42.47 mph (68.35 km/h) |
| 50 mph (80.47 km/h) | 47.19 mph (75.95 km/h) |
| 55 mph (88.51 km/h) | 51.91 mph (83.54 km/h) |
| 60 mph (96.56 km/h) | 56.63 mph (91.14 km/h) |
| 65 mph (104.61 km/h) | 61.35 mph (98.73 km/h) |
| 70 mph (112.65 km/h) | 66.07 mph (106.32 km/h) |
| 75 mph (120.7 km/h) | 70.79 mph (113.92 km/h) |
| 80 mph (128.75 km/h) | 75.5 mph (121.51 km/h) |
| 85 mph (136.79 km/h) | 80.22 mph (129.11 km/h) |
| 90 mph (144.84 km/h) | 84.94 mph (136.7 km/h) |
| 95 mph (152.89 km/h) | 89.66 mph (144.3 km/h) |
| 100 mph (160.93 km/h) | 94.38 mph (151.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2098 | 2437 | 2624 | 2740 | 2865 | 2954 | 3053 | 3169 | 3329 | 3490 | 3668 | 3811 | 4070 | 4356 | 4579 | 4722 | 4802 | 5097 | 5507 | 6400 |
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