Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-14 | 185/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.93 (633.1) | 24.47 (621.5) | -0.46 (-11.6) -1.8% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 78.3 (1988.94) | 76.87 (1952.5) | -1.43 (-36.44) -1.8% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 4.73 (120.25) | -0.73 (-18.5) -13.3% |
| Revolutions per mile (km) | 809.15 (502.78) | 824.25 (512.16) | 15.1 (9.38) 1.9% |
185/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.6 km/h) |
| 25 mph (40.23 km/h) | 24.54 mph (39.5 km/h) |
| 30 mph (48.28 km/h) | 29.45 mph (47.4 km/h) |
| 35 mph (56.33 km/h) | 34.36 mph (55.3 km/h) |
| 40 mph (64.37 km/h) | 39.27 mph (63.19 km/h) |
| 45 mph (72.42 km/h) | 44.18 mph (71.09 km/h) |
| 50 mph (80.47 km/h) | 49.08 mph (78.99 km/h) |
| 55 mph (88.51 km/h) | 53.99 mph (86.89 km/h) |
| 60 mph (96.56 km/h) | 58.9 mph (94.79 km/h) |
| 65 mph (104.61 km/h) | 63.81 mph (102.69 km/h) |
| 70 mph (112.65 km/h) | 68.72 mph (110.59 km/h) |
| 75 mph (120.7 km/h) | 73.63 mph (118.49 km/h) |
| 80 mph (128.75 km/h) | 78.53 mph (126.39 km/h) |
| 85 mph (136.79 km/h) | 83.44 mph (134.29 km/h) |
| 90 mph (144.84 km/h) | 88.35 mph (142.19 km/h) |
| 95 mph (152.89 km/h) | 93.26 mph (150.09 km/h) |
| 100 mph (160.93 km/h) | 98.17 mph (157.99 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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