Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 165/90-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 23.69 (601.8) | 4.55 (115.5) 23.8% |
| Width inches (mm) | 6.5 (165) | 6.5 (165) | 0 (0) 0% |
| Circum. inches (mm) | 60.15 (1527.76) | 74.43 (1890.61) | 14.29 (362.85) 23.8% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 5.85 (148.5) | 2.27 (57.75) 63.6% |
| Revolutions per mile (km) | 1053.4 (654.55) | 851.23 (528.93) | -202.17 (-125.62) -19.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.75 mph (39.83 km/h) |
| 25 mph (40.23 km/h) | 30.94 mph (49.79 km/h) |
| 30 mph (48.28 km/h) | 37.13 mph (59.75 km/h) |
| 35 mph (56.33 km/h) | 43.31 mph (69.71 km/h) |
| 40 mph (64.37 km/h) | 49.5 mph (79.66 km/h) |
| 45 mph (72.42 km/h) | 55.69 mph (89.62 km/h) |
| 50 mph (80.47 km/h) | 61.88 mph (99.58 km/h) |
| 55 mph (88.51 km/h) | 68.06 mph (109.54 km/h) |
| 60 mph (96.56 km/h) | 74.25 mph (119.49 km/h) |
| 65 mph (104.61 km/h) | 80.44 mph (129.45 km/h) |
| 70 mph (112.65 km/h) | 86.63 mph (139.41 km/h) |
| 75 mph (120.7 km/h) | 92.81 mph (149.37 km/h) |
| 80 mph (128.75 km/h) | 99 mph (159.33 km/h) |
| 85 mph (136.79 km/h) | 105.19 mph (169.28 km/h) |
| 90 mph (144.84 km/h) | 111.38 mph (179.24 km/h) |
| 95 mph (152.89 km/h) | 117.56 mph (189.2 km/h) |
| 100 mph (160.93 km/h) | 123.75 mph (199.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2166 | 2516 | 2710 | 2830 | 2959 | 3051 | 3153 | 3272 | 3438 | 3604 | 3789 | 3936 | 4203 | 4498 | 4729 | 4876 | 4959 | 5263 | 5687 | 6609 |
Better Fuel Economy Factory Ratios Increased Power
