Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/70-14 | 185/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.09 (586.6) | 24.47 (621.5) | 1.37 (34.9) 5.9% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 72.55 (1842.86) | 76.87 (1952.5) | 4.32 (109.64) 5.9% |
| Sidewall Height inches (mm) | 4.55 (115.5) | 4.73 (120.25) | 0.19 (4.75) 4.1% |
| Revolutions per mile (km) | 873.29 (542.63) | 824.25 (512.16) | -49.04 (-30.47) -5.6% |
185/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.19 mph (34.1 km/h) |
| 25 mph (40.23 km/h) | 26.49 mph (42.63 km/h) |
| 30 mph (48.28 km/h) | 31.78 mph (51.15 km/h) |
| 35 mph (56.33 km/h) | 37.08 mph (59.68 km/h) |
| 40 mph (64.37 km/h) | 42.38 mph (68.2 km/h) |
| 45 mph (72.42 km/h) | 47.68 mph (76.73 km/h) |
| 50 mph (80.47 km/h) | 52.97 mph (85.25 km/h) |
| 55 mph (88.51 km/h) | 58.27 mph (93.78 km/h) |
| 60 mph (96.56 km/h) | 63.57 mph (102.31 km/h) |
| 65 mph (104.61 km/h) | 68.87 mph (110.83 km/h) |
| 70 mph (112.65 km/h) | 74.16 mph (119.36 km/h) |
| 75 mph (120.7 km/h) | 79.46 mph (127.88 km/h) |
| 80 mph (128.75 km/h) | 84.76 mph (136.41 km/h) |
| 85 mph (136.79 km/h) | 90.06 mph (144.93 km/h) |
| 90 mph (144.84 km/h) | 95.35 mph (153.46 km/h) |
| 95 mph (152.89 km/h) | 100.65 mph (161.98 km/h) |
| 100 mph (160.93 km/h) | 105.95 mph (170.51 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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