Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.44 (570) | 23.74 (603) | 1.3 (33) 5.8% |
| Width inches (mm) | 5.31 (135) | 7.28 (185) | 1.97 (50) 37% |
| Circum. inches (mm) | 70.5 (1790.71) | 74.58 (1894.38) | 4.08 (103.67) 5.8% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 4.37 (111) | 0.65 (16.5) 17.5% |
| Revolutions per mile (km) | 898.72 (558.44) | 849.54 (527.88) | -49.18 (-30.56) -5.5% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.16 mph (34.05 km/h) |
| 25 mph (40.23 km/h) | 26.45 mph (42.56 km/h) |
| 30 mph (48.28 km/h) | 31.74 mph (51.08 km/h) |
| 35 mph (56.33 km/h) | 37.03 mph (59.59 km/h) |
| 40 mph (64.37 km/h) | 42.32 mph (68.1 km/h) |
| 45 mph (72.42 km/h) | 47.61 mph (76.61 km/h) |
| 50 mph (80.47 km/h) | 52.89 mph (85.13 km/h) |
| 55 mph (88.51 km/h) | 58.18 mph (93.64 km/h) |
| 60 mph (96.56 km/h) | 63.47 mph (102.15 km/h) |
| 65 mph (104.61 km/h) | 68.76 mph (110.66 km/h) |
| 70 mph (112.65 km/h) | 74.05 mph (119.18 km/h) |
| 75 mph (120.7 km/h) | 79.34 mph (127.69 km/h) |
| 80 mph (128.75 km/h) | 84.63 mph (136.2 km/h) |
| 85 mph (136.79 km/h) | 89.92 mph (144.71 km/h) |
| 90 mph (144.84 km/h) | 95.21 mph (153.23 km/h) |
| 95 mph (152.89 km/h) | 100.5 mph (161.74 km/h) |
| 100 mph (160.93 km/h) | 105.79 mph (170.25 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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