Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-16 | 185/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.93 (683.9) | 24.47 (621.5) | -2.46 (-62.4) -9.1% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 84.59 (2148.54) | 76.87 (1952.5) | -7.72 (-196.04) -9.1% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 4.73 (120.25) | -0.73 (-18.5) -13.3% |
| Revolutions per mile (km) | 749.04 (465.43) | 824.25 (512.16) | 75.21 (46.73) 10% |
185/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.18 mph (29.25 km/h) |
| 25 mph (40.23 km/h) | 22.72 mph (36.56 km/h) |
| 30 mph (48.28 km/h) | 27.26 mph (43.88 km/h) |
| 35 mph (56.33 km/h) | 31.81 mph (51.19 km/h) |
| 40 mph (64.37 km/h) | 36.35 mph (58.5 km/h) |
| 45 mph (72.42 km/h) | 40.89 mph (65.81 km/h) |
| 50 mph (80.47 km/h) | 45.44 mph (73.13 km/h) |
| 55 mph (88.51 km/h) | 49.98 mph (80.44 km/h) |
| 60 mph (96.56 km/h) | 54.53 mph (87.75 km/h) |
| 65 mph (104.61 km/h) | 59.07 mph (95.06 km/h) |
| 70 mph (112.65 km/h) | 63.61 mph (102.38 km/h) |
| 75 mph (120.7 km/h) | 68.16 mph (109.69 km/h) |
| 80 mph (128.75 km/h) | 72.7 mph (117 km/h) |
| 85 mph (136.79 km/h) | 77.24 mph (124.31 km/h) |
| 90 mph (144.84 km/h) | 81.79 mph (131.63 km/h) |
| 95 mph (152.89 km/h) | 86.33 mph (138.94 km/h) |
| 100 mph (160.93 km/h) | 90.88 mph (146.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2098 | 2437 | 2624 | 2740 | 2865 | 2954 | 3053 | 3169 | 3329 | 3490 | 3668 | 3811 | 4070 | 4356 | 4579 | 4722 | 4802 | 5097 | 5507 | 6400 |
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