Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/65-15 | 165/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.47 (621.5) | 22.15 (562.5) | -2.32 (-59) -9.5% |
| Width inches (mm) | 7.28 (185) | 6.5 (165) | -0.79 (-20) -10.8% |
| Circum. inches (mm) | 76.87 (1952.5) | 69.57 (1767.15) | -7.3 (-185.35) -9.5% |
| Sidewall Height inches (mm) | 4.73 (120.25) | 3.57 (90.75) | -1.16 (-29.5) -24.5% |
| Revolutions per mile (km) | 824.25 (512.16) | 910.7 (565.88) | 86.45 (53.72) 10.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.1 mph (29.13 km/h) |
| 25 mph (40.23 km/h) | 22.63 mph (36.41 km/h) |
| 30 mph (48.28 km/h) | 27.15 mph (43.7 km/h) |
| 35 mph (56.33 km/h) | 31.68 mph (50.98 km/h) |
| 40 mph (64.37 km/h) | 36.2 mph (58.26 km/h) |
| 45 mph (72.42 km/h) | 40.73 mph (65.55 km/h) |
| 50 mph (80.47 km/h) | 45.25 mph (72.83 km/h) |
| 55 mph (88.51 km/h) | 49.78 mph (80.11 km/h) |
| 60 mph (96.56 km/h) | 54.3 mph (87.39 km/h) |
| 65 mph (104.61 km/h) | 58.83 mph (94.68 km/h) |
| 70 mph (112.65 km/h) | 63.35 mph (101.96 km/h) |
| 75 mph (120.7 km/h) | 67.88 mph (109.24 km/h) |
| 80 mph (128.75 km/h) | 72.41 mph (116.53 km/h) |
| 85 mph (136.79 km/h) | 76.93 mph (123.81 km/h) |
| 90 mph (144.84 km/h) | 81.46 mph (131.09 km/h) |
| 95 mph (152.89 km/h) | 85.98 mph (138.37 km/h) |
| 100 mph (160.93 km/h) | 90.51 mph (145.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2318 | 2692 | 2899 | 3028 | 3166 | 3264 | 3373 | 3501 | 3679 | 3856 | 4053 | 4211 | 4497 | 4813 | 5059 | 5217 | 5306 | 5631 | 6085 | 7071 |
Better Fuel Economy Factory Ratios Increased Power
