Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/65-12 | 125/90-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.4 (467.3) | 20.86 (529.8) | 2.46 (62.5) 13.4% |
| Width inches (mm) | 4.92 (125) | 4.92 (125) | 0 (0) 0% |
| Circum. inches (mm) | 57.8 (1468.07) | 65.53 (1664.42) | 7.73 (196.35) 13.4% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 4.43 (112.5) | 1.23 (31.25) 38.5% |
| Revolutions per mile (km) | 1096.23 (681.17) | 966.91 (600.81) | -129.32 (-80.36) -11.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.67 mph (36.49 km/h) |
| 25 mph (40.23 km/h) | 28.34 mph (45.61 km/h) |
| 30 mph (48.28 km/h) | 34.01 mph (54.74 km/h) |
| 35 mph (56.33 km/h) | 39.68 mph (63.86 km/h) |
| 40 mph (64.37 km/h) | 45.35 mph (72.98 km/h) |
| 45 mph (72.42 km/h) | 51.02 mph (82.11 km/h) |
| 50 mph (80.47 km/h) | 56.69 mph (91.23 km/h) |
| 55 mph (88.51 km/h) | 62.36 mph (100.35 km/h) |
| 60 mph (96.56 km/h) | 68.02 mph (109.48 km/h) |
| 65 mph (104.61 km/h) | 73.69 mph (118.6 km/h) |
| 70 mph (112.65 km/h) | 79.36 mph (127.72 km/h) |
| 75 mph (120.7 km/h) | 85.03 mph (136.84 km/h) |
| 80 mph (128.75 km/h) | 90.7 mph (145.97 km/h) |
| 85 mph (136.79 km/h) | 96.37 mph (155.09 km/h) |
| 90 mph (144.84 km/h) | 102.04 mph (164.21 km/h) |
| 95 mph (152.89 km/h) | 107.71 mph (173.34 km/h) |
| 100 mph (160.93 km/h) | 113.37 mph (182.46 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
