Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 245/50-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 21.65 (549.8) | 2.5 (63.5) 13.1% |
| Width inches (mm) | 6.5 (165) | 9.65 (245) | 3.15 (80) 48.5% |
| Circum. inches (mm) | 60.15 (1527.76) | 68 (1727.25) | 7.85 (199.49) 13.1% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4.82 (122.5) | 1.25 (31.75) 35% |
| Revolutions per mile (km) | 1053.4 (654.55) | 931.74 (578.95) | -121.66 (-75.6) -11.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.61 mph (36.39 km/h) |
| 25 mph (40.23 km/h) | 28.26 mph (45.49 km/h) |
| 30 mph (48.28 km/h) | 33.92 mph (54.58 km/h) |
| 35 mph (56.33 km/h) | 39.57 mph (63.68 km/h) |
| 40 mph (64.37 km/h) | 45.22 mph (72.78 km/h) |
| 45 mph (72.42 km/h) | 50.88 mph (81.88 km/h) |
| 50 mph (80.47 km/h) | 56.53 mph (90.97 km/h) |
| 55 mph (88.51 km/h) | 62.18 mph (100.07 km/h) |
| 60 mph (96.56 km/h) | 67.83 mph (109.17 km/h) |
| 65 mph (104.61 km/h) | 73.49 mph (118.27 km/h) |
| 70 mph (112.65 km/h) | 79.14 mph (127.36 km/h) |
| 75 mph (120.7 km/h) | 84.79 mph (136.46 km/h) |
| 80 mph (128.75 km/h) | 90.45 mph (145.56 km/h) |
| 85 mph (136.79 km/h) | 96.1 mph (154.66 km/h) |
| 90 mph (144.84 km/h) | 101.75 mph (163.75 km/h) |
| 95 mph (152.89 km/h) | 107.4 mph (172.85 km/h) |
| 100 mph (160.93 km/h) | 113.06 mph (181.95 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
