Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 265/20-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 16.17 (410.8) | -2.97 (-75.5) -15.5% |
| Width inches (mm) | 6.5 (165) | 10.43 (265) | 3.94 (100) 60.6% |
| Circum. inches (mm) | 60.15 (1527.76) | 50.81 (1290.57) | -9.34 (-237.19) -15.5% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 2.09 (53) | -1.49 (-37.75) -41.6% |
| Revolutions per mile (km) | 1053.4 (654.55) | 1247.01 (774.85) | 193.6 (120.3) 18.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.89 mph (27.19 km/h) |
| 25 mph (40.23 km/h) | 21.12 mph (33.99 km/h) |
| 30 mph (48.28 km/h) | 25.34 mph (40.78 km/h) |
| 35 mph (56.33 km/h) | 29.57 mph (47.58 km/h) |
| 40 mph (64.37 km/h) | 33.79 mph (54.38 km/h) |
| 45 mph (72.42 km/h) | 38.01 mph (61.18 km/h) |
| 50 mph (80.47 km/h) | 42.24 mph (67.97 km/h) |
| 55 mph (88.51 km/h) | 46.46 mph (74.77 km/h) |
| 60 mph (96.56 km/h) | 50.68 mph (81.57 km/h) |
| 65 mph (104.61 km/h) | 54.91 mph (88.37 km/h) |
| 70 mph (112.65 km/h) | 59.13 mph (95.16 km/h) |
| 75 mph (120.7 km/h) | 63.36 mph (101.96 km/h) |
| 80 mph (128.75 km/h) | 67.58 mph (108.76 km/h) |
| 85 mph (136.79 km/h) | 71.8 mph (115.56 km/h) |
| 90 mph (144.84 km/h) | 76.03 mph (122.35 km/h) |
| 95 mph (152.89 km/h) | 80.25 mph (129.15 km/h) |
| 100 mph (160.93 km/h) | 84.47 mph (135.95 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
