Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.32 (567) | 23.74 (603) | 1.42 (36) 6.3% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 70.13 (1781.28) | 74.58 (1894.38) | 4.45 (113.1) 6.3% |
| Sidewall Height inches (mm) | 3.66 (93) | 4.37 (111) | 0.71 (18) 19.4% |
| Revolutions per mile (km) | 903.47 (561.39) | 849.54 (527.88) | -53.94 (-33.52) -6% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.27 mph (34.23 km/h) |
| 25 mph (40.23 km/h) | 26.59 mph (42.79 km/h) |
| 30 mph (48.28 km/h) | 31.9 mph (51.35 km/h) |
| 35 mph (56.33 km/h) | 37.22 mph (59.9 km/h) |
| 40 mph (64.37 km/h) | 42.54 mph (68.46 km/h) |
| 45 mph (72.42 km/h) | 47.86 mph (77.02 km/h) |
| 50 mph (80.47 km/h) | 53.17 mph (85.58 km/h) |
| 55 mph (88.51 km/h) | 58.49 mph (94.13 km/h) |
| 60 mph (96.56 km/h) | 63.81 mph (102.69 km/h) |
| 65 mph (104.61 km/h) | 69.13 mph (111.25 km/h) |
| 70 mph (112.65 km/h) | 74.44 mph (119.81 km/h) |
| 75 mph (120.7 km/h) | 79.76 mph (128.36 km/h) |
| 80 mph (128.75 km/h) | 85.08 mph (136.92 km/h) |
| 85 mph (136.79 km/h) | 90.4 mph (145.48 km/h) |
| 90 mph (144.84 km/h) | 95.71 mph (154.04 km/h) |
| 95 mph (152.89 km/h) | 101.03 mph (162.6 km/h) |
| 100 mph (160.93 km/h) | 106.35 mph (171.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2162 | 2511 | 2705 | 2824 | 2953 | 3045 | 3146 | 3266 | 3431 | 3597 | 3781 | 3928 | 4195 | 4489 | 4719 | 4867 | 4949 | 5253 | 5676 | 6596 |
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