Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-18 | 165/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.47 (697.7) | 26.44 (671.7) | -1.02 (-26) -3.7% |
| Width inches (mm) | 7.28 (185) | 6.5 (165) | -0.79 (-20) -10.8% |
| Circum. inches (mm) | 86.29 (2191.89) | 83.08 (2110.21) | -3.22 (-81.68) -3.7% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 4.22 (107.25) | -0.51 (-13) -10.8% |
| Revolutions per mile (km) | 734.23 (456.23) | 762.65 (473.89) | 28.42 (17.66) 3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.25 mph (30.99 km/h) |
| 25 mph (40.23 km/h) | 24.07 mph (38.73 km/h) |
| 30 mph (48.28 km/h) | 28.88 mph (46.48 km/h) |
| 35 mph (56.33 km/h) | 33.7 mph (54.23 km/h) |
| 40 mph (64.37 km/h) | 38.51 mph (61.97 km/h) |
| 45 mph (72.42 km/h) | 43.32 mph (69.72 km/h) |
| 50 mph (80.47 km/h) | 48.14 mph (77.47 km/h) |
| 55 mph (88.51 km/h) | 52.95 mph (85.22 km/h) |
| 60 mph (96.56 km/h) | 57.76 mph (92.96 km/h) |
| 65 mph (104.61 km/h) | 62.58 mph (100.71 km/h) |
| 70 mph (112.65 km/h) | 67.39 mph (108.46 km/h) |
| 75 mph (120.7 km/h) | 72.21 mph (116.2 km/h) |
| 80 mph (128.75 km/h) | 77.02 mph (123.95 km/h) |
| 85 mph (136.79 km/h) | 81.83 mph (131.7 km/h) |
| 90 mph (144.84 km/h) | 86.65 mph (139.44 km/h) |
| 95 mph (152.89 km/h) | 91.46 mph (147.19 km/h) |
| 100 mph (160.93 km/h) | 96.27 mph (154.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1941 | 2255 | 2428 | 2535 | 2651 | 2734 | 2824 | 2932 | 3080 | 3229 | 3394 | 3526 | 3766 | 4030 | 4237 | 4369 | 4443 | 4716 | 5096 | 5921 |
Better Fuel Economy Factory Ratios Increased Power
