Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-15 | 185/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.42 (569.5) | 23.74 (603) | 1.32 (33.5) 5.9% |
| Width inches (mm) | 5.71 (145) | 7.28 (185) | 1.57 (40) 27.6% |
| Circum. inches (mm) | 70.44 (1789.14) | 74.58 (1894.38) | 4.14 (105.24) 5.9% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 4.37 (111) | 0.66 (16.75) 17.8% |
| Revolutions per mile (km) | 899.51 (558.93) | 849.54 (527.88) | -49.97 (-31.05) -5.6% |
185/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.18 mph (34.08 km/h) |
| 25 mph (40.23 km/h) | 26.47 mph (42.6 km/h) |
| 30 mph (48.28 km/h) | 31.76 mph (51.12 km/h) |
| 35 mph (56.33 km/h) | 37.06 mph (59.64 km/h) |
| 40 mph (64.37 km/h) | 42.35 mph (68.16 km/h) |
| 45 mph (72.42 km/h) | 47.65 mph (76.68 km/h) |
| 50 mph (80.47 km/h) | 52.94 mph (85.2 km/h) |
| 55 mph (88.51 km/h) | 58.24 mph (93.72 km/h) |
| 60 mph (96.56 km/h) | 63.53 mph (102.24 km/h) |
| 65 mph (104.61 km/h) | 68.82 mph (110.76 km/h) |
| 70 mph (112.65 km/h) | 74.12 mph (119.28 km/h) |
| 75 mph (120.7 km/h) | 79.41 mph (127.8 km/h) |
| 80 mph (128.75 km/h) | 84.71 mph (136.32 km/h) |
| 85 mph (136.79 km/h) | 90 mph (144.84 km/h) |
| 90 mph (144.84 km/h) | 95.29 mph (153.36 km/h) |
| 95 mph (152.89 km/h) | 100.59 mph (161.88 km/h) |
| 100 mph (160.93 km/h) | 105.88 mph (170.4 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 |
Better Fuel Economy Factory Ratios Increased Power
