Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-18 | 185/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.47 (697.7) | 25.74 (653.8) | -1.73 (-43.9) -6.3% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 86.29 (2191.89) | 80.87 (2053.97) | -5.43 (-137.92) -6.3% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 4.37 (111) | -0.36 (-9.25) -7.7% |
| Revolutions per mile (km) | 734.23 (456.23) | 783.53 (486.86) | 49.3 (30.63) 6.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.74 mph (30.16 km/h) |
| 25 mph (40.23 km/h) | 23.43 mph (37.7 km/h) |
| 30 mph (48.28 km/h) | 28.11 mph (45.24 km/h) |
| 35 mph (56.33 km/h) | 32.8 mph (52.78 km/h) |
| 40 mph (64.37 km/h) | 37.48 mph (60.32 km/h) |
| 45 mph (72.42 km/h) | 42.17 mph (67.86 km/h) |
| 50 mph (80.47 km/h) | 46.85 mph (75.4 km/h) |
| 55 mph (88.51 km/h) | 51.54 mph (82.94 km/h) |
| 60 mph (96.56 km/h) | 56.22 mph (90.49 km/h) |
| 65 mph (104.61 km/h) | 60.91 mph (98.03 km/h) |
| 70 mph (112.65 km/h) | 65.6 mph (105.57 km/h) |
| 75 mph (120.7 km/h) | 70.28 mph (113.11 km/h) |
| 80 mph (128.75 km/h) | 74.97 mph (120.65 km/h) |
| 85 mph (136.79 km/h) | 79.65 mph (128.19 km/h) |
| 90 mph (144.84 km/h) | 84.34 mph (135.73 km/h) |
| 95 mph (152.89 km/h) | 89.02 mph (143.27 km/h) |
| 100 mph (160.93 km/h) | 93.71 mph (150.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1994 | 2316 | 2495 | 2605 | 2724 | 2808 | 2902 | 3012 | 3165 | 3318 | 3487 | 3623 | 3869 | 4141 | 4353 | 4488 | 4565 | 4845 | 5235 | 6084 |
Better Fuel Economy Factory Ratios Increased Power
