Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/60-15 | 185/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.63 (651) | 24.47 (621.5) | -1.16 (-29.5) -4.5% |
| Width inches (mm) | 8.86 (225) | 7.28 (185) | -1.57 (-40) -17.8% |
| Circum. inches (mm) | 80.52 (2045.18) | 76.87 (1952.5) | -3.65 (-92.68) -4.5% |
| Sidewall Height inches (mm) | 5.31 (135) | 4.73 (120.25) | -0.58 (-14.75) -10.9% |
| Revolutions per mile (km) | 786.9 (488.95) | 824.25 (512.16) | 37.35 (23.21) 4.7% |
185/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.09 mph (30.73 km/h) |
| 25 mph (40.23 km/h) | 23.87 mph (38.41 km/h) |
| 30 mph (48.28 km/h) | 28.64 mph (46.09 km/h) |
| 35 mph (56.33 km/h) | 33.41 mph (53.77 km/h) |
| 40 mph (64.37 km/h) | 38.19 mph (61.46 km/h) |
| 45 mph (72.42 km/h) | 42.96 mph (69.14 km/h) |
| 50 mph (80.47 km/h) | 47.73 mph (76.82 km/h) |
| 55 mph (88.51 km/h) | 52.51 mph (84.5 km/h) |
| 60 mph (96.56 km/h) | 57.28 mph (92.19 km/h) |
| 65 mph (104.61 km/h) | 62.05 mph (99.87 km/h) |
| 70 mph (112.65 km/h) | 66.83 mph (107.55 km/h) |
| 75 mph (120.7 km/h) | 71.6 mph (115.23 km/h) |
| 80 mph (128.75 km/h) | 76.37 mph (122.91 km/h) |
| 85 mph (136.79 km/h) | 81.15 mph (130.6 km/h) |
| 90 mph (144.84 km/h) | 85.92 mph (138.28 km/h) |
| 95 mph (152.89 km/h) | 90.7 mph (145.96 km/h) |
| 100 mph (160.93 km/h) | 95.47 mph (153.64 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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