Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/65-12 | 120/90-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.4 (467.3) | 20.5 (520.8) | 2.11 (53.5) 11.4% |
| Width inches (mm) | 4.92 (125) | 4.72 (120) | -0.2 (-5) -4% |
| Circum. inches (mm) | 57.8 (1468.07) | 64.42 (1636.14) | 6.62 (168.08) 11.4% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 4.25 (108) | 1.05 (26.75) 32.9% |
| Revolutions per mile (km) | 1096.23 (681.17) | 983.62 (611.19) | -112.61 (-69.97) -10.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.29 mph (35.87 km/h) |
| 25 mph (40.23 km/h) | 27.86 mph (44.84 km/h) |
| 30 mph (48.28 km/h) | 33.43 mph (53.81 km/h) |
| 35 mph (56.33 km/h) | 39.01 mph (62.78 km/h) |
| 40 mph (64.37 km/h) | 44.58 mph (71.74 km/h) |
| 45 mph (72.42 km/h) | 50.15 mph (80.71 km/h) |
| 50 mph (80.47 km/h) | 55.72 mph (89.68 km/h) |
| 55 mph (88.51 km/h) | 61.3 mph (98.65 km/h) |
| 60 mph (96.56 km/h) | 66.87 mph (107.62 km/h) |
| 65 mph (104.61 km/h) | 72.44 mph (116.58 km/h) |
| 70 mph (112.65 km/h) | 78.01 mph (125.55 km/h) |
| 75 mph (120.7 km/h) | 83.59 mph (134.52 km/h) |
| 80 mph (128.75 km/h) | 89.16 mph (143.49 km/h) |
| 85 mph (136.79 km/h) | 94.73 mph (152.46 km/h) |
| 90 mph (144.84 km/h) | 100.3 mph (161.42 km/h) |
| 95 mph (152.89 km/h) | 105.88 mph (170.39 km/h) |
| 100 mph (160.93 km/h) | 111.45 mph (179.36 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
