Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/50-15 | 185/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.68 (576) | 24.47 (621.5) | 1.79 (45.5) 7.9% |
| Width inches (mm) | 7.68 (195) | 7.28 (185) | -0.39 (-10) -5.1% |
| Circum. inches (mm) | 71.24 (1809.56) | 76.87 (1952.5) | 5.63 (142.94) 7.9% |
| Sidewall Height inches (mm) | 3.84 (97.5) | 4.73 (120.25) | 0.9 (22.75) 23.3% |
| Revolutions per mile (km) | 889.36 (552.62) | 824.25 (512.16) | -65.11 (-40.46) -7.3% |
185/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.58 mph (34.73 km/h) |
| 25 mph (40.23 km/h) | 26.97 mph (43.41 km/h) |
| 30 mph (48.28 km/h) | 32.37 mph (52.09 km/h) |
| 35 mph (56.33 km/h) | 37.76 mph (60.78 km/h) |
| 40 mph (64.37 km/h) | 43.16 mph (69.46 km/h) |
| 45 mph (72.42 km/h) | 48.55 mph (78.14 km/h) |
| 50 mph (80.47 km/h) | 53.95 mph (86.82 km/h) |
| 55 mph (88.51 km/h) | 59.34 mph (95.51 km/h) |
| 60 mph (96.56 km/h) | 64.74 mph (104.19 km/h) |
| 65 mph (104.61 km/h) | 70.13 mph (112.87 km/h) |
| 70 mph (112.65 km/h) | 75.53 mph (121.55 km/h) |
| 75 mph (120.7 km/h) | 80.92 mph (130.24 km/h) |
| 80 mph (128.75 km/h) | 86.32 mph (138.92 km/h) |
| 85 mph (136.79 km/h) | 91.71 mph (147.6 km/h) |
| 90 mph (144.84 km/h) | 97.11 mph (156.28 km/h) |
| 95 mph (152.89 km/h) | 102.5 mph (164.97 km/h) |
| 100 mph (160.93 km/h) | 107.9 mph (173.65 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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