Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/70-12 | 145/45-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.17 (486.8) | 17.14 (435.3) | -2.03 (-51.5) -10.6% |
| Width inches (mm) | 5.12 (130) | 5.71 (145) | 0.59 (15) 11.5% |
| Circum. inches (mm) | 60.21 (1529.33) | 53.84 (1367.54) | -6.37 (-161.79) -10.6% |
| Sidewall Height inches (mm) | 3.58 (91) | 2.57 (65.25) | -1.01 (-25.75) -28.3% |
| Revolutions per mile (km) | 1052.32 (653.88) | 1176.82 (731.24) | 124.5 (77.36) 11.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.88 mph (28.78 km/h) |
| 25 mph (40.23 km/h) | 22.36 mph (35.98 km/h) |
| 30 mph (48.28 km/h) | 26.83 mph (43.17 km/h) |
| 35 mph (56.33 km/h) | 31.3 mph (50.37 km/h) |
| 40 mph (64.37 km/h) | 35.77 mph (57.56 km/h) |
| 45 mph (72.42 km/h) | 40.24 mph (64.76 km/h) |
| 50 mph (80.47 km/h) | 44.71 mph (71.95 km/h) |
| 55 mph (88.51 km/h) | 49.18 mph (79.15 km/h) |
| 60 mph (96.56 km/h) | 53.65 mph (86.35 km/h) |
| 65 mph (104.61 km/h) | 58.12 mph (93.54 km/h) |
| 70 mph (112.65 km/h) | 62.59 mph (100.74 km/h) |
| 75 mph (120.7 km/h) | 67.07 mph (107.93 km/h) |
| 80 mph (128.75 km/h) | 71.54 mph (115.13 km/h) |
| 85 mph (136.79 km/h) | 76.01 mph (122.32 km/h) |
| 90 mph (144.84 km/h) | 80.48 mph (129.52 km/h) |
| 95 mph (152.89 km/h) | 84.95 mph (136.71 km/h) |
| 100 mph (160.93 km/h) | 89.42 mph (143.91 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
