Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/60-15 | 185/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 24.47 (621.5) | 0.49 (12.5) 2.1% |
| Width inches (mm) | 7.48 (190) | 7.28 (185) | -0.2 (-5) -2.6% |
| Circum. inches (mm) | 75.32 (1913.23) | 76.87 (1952.5) | 1.55 (39.27) 2.1% |
| Sidewall Height inches (mm) | 4.49 (114) | 4.73 (120.25) | 0.25 (6.25) 5.5% |
| Revolutions per mile (km) | 841.17 (522.68) | 824.25 (512.16) | -16.92 (-10.51) -2% |
185/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.41 mph (32.85 km/h) |
| 25 mph (40.23 km/h) | 25.51 mph (41.06 km/h) |
| 30 mph (48.28 km/h) | 30.62 mph (49.27 km/h) |
| 35 mph (56.33 km/h) | 35.72 mph (57.48 km/h) |
| 40 mph (64.37 km/h) | 40.82 mph (65.7 km/h) |
| 45 mph (72.42 km/h) | 45.92 mph (73.91 km/h) |
| 50 mph (80.47 km/h) | 51.03 mph (82.12 km/h) |
| 55 mph (88.51 km/h) | 56.13 mph (90.33 km/h) |
| 60 mph (96.56 km/h) | 61.23 mph (98.54 km/h) |
| 65 mph (104.61 km/h) | 66.33 mph (106.75 km/h) |
| 70 mph (112.65 km/h) | 71.44 mph (114.97 km/h) |
| 75 mph (120.7 km/h) | 76.54 mph (123.18 km/h) |
| 80 mph (128.75 km/h) | 81.64 mph (131.39 km/h) |
| 85 mph (136.79 km/h) | 86.74 mph (139.6 km/h) |
| 90 mph (144.84 km/h) | 91.85 mph (147.81 km/h) |
| 95 mph (152.89 km/h) | 96.95 mph (156.03 km/h) |
| 100 mph (160.93 km/h) | 102.05 mph (164.24 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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