Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.65 (626) | 23.74 (603) | -0.91 (-23) -3.7% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 77.43 (1966.64) | 74.58 (1894.38) | -2.84 (-72.26) -3.7% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 4.37 (111) | -0.45 (-11.5) -9.4% |
| Revolutions per mile (km) | 818.32 (508.48) | 849.54 (527.88) | 31.21 (19.39) 3.8% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.27 mph (31 km/h) |
| 25 mph (40.23 km/h) | 24.08 mph (38.76 km/h) |
| 30 mph (48.28 km/h) | 28.9 mph (46.51 km/h) |
| 35 mph (56.33 km/h) | 33.71 mph (54.26 km/h) |
| 40 mph (64.37 km/h) | 38.53 mph (62.01 km/h) |
| 45 mph (72.42 km/h) | 43.35 mph (69.76 km/h) |
| 50 mph (80.47 km/h) | 48.16 mph (77.51 km/h) |
| 55 mph (88.51 km/h) | 52.98 mph (85.26 km/h) |
| 60 mph (96.56 km/h) | 57.8 mph (93.01 km/h) |
| 65 mph (104.61 km/h) | 62.61 mph (100.76 km/h) |
| 70 mph (112.65 km/h) | 67.43 mph (108.52 km/h) |
| 75 mph (120.7 km/h) | 72.24 mph (116.27 km/h) |
| 80 mph (128.75 km/h) | 77.06 mph (124.02 km/h) |
| 85 mph (136.79 km/h) | 81.88 mph (131.77 km/h) |
| 90 mph (144.84 km/h) | 86.69 mph (139.52 km/h) |
| 95 mph (152.89 km/h) | 91.51 mph (147.27 km/h) |
| 100 mph (160.93 km/h) | 96.33 mph (155.02 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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