Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/65-12 | 125/85-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.4 (467.3) | 20.37 (517.3) | 1.97 (50) 10.7% |
| Width inches (mm) | 4.92 (125) | 4.92 (125) | 0 (0) 0% |
| Circum. inches (mm) | 57.8 (1468.07) | 63.98 (1625.15) | 6.18 (157.08) 10.7% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 4.18 (106.25) | 0.98 (25) 30.8% |
| Revolutions per mile (km) | 1096.23 (681.17) | 990.28 (615.33) | -105.96 (-65.84) -9.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.14 mph (35.63 km/h) |
| 25 mph (40.23 km/h) | 27.67 mph (44.54 km/h) |
| 30 mph (48.28 km/h) | 33.21 mph (53.45 km/h) |
| 35 mph (56.33 km/h) | 38.74 mph (62.35 km/h) |
| 40 mph (64.37 km/h) | 44.28 mph (71.26 km/h) |
| 45 mph (72.42 km/h) | 49.81 mph (80.17 km/h) |
| 50 mph (80.47 km/h) | 55.35 mph (89.08 km/h) |
| 55 mph (88.51 km/h) | 60.88 mph (97.98 km/h) |
| 60 mph (96.56 km/h) | 66.42 mph (106.89 km/h) |
| 65 mph (104.61 km/h) | 71.95 mph (115.8 km/h) |
| 70 mph (112.65 km/h) | 77.49 mph (124.71 km/h) |
| 75 mph (120.7 km/h) | 83.02 mph (133.62 km/h) |
| 80 mph (128.75 km/h) | 88.56 mph (142.52 km/h) |
| 85 mph (136.79 km/h) | 94.09 mph (151.43 km/h) |
| 90 mph (144.84 km/h) | 99.63 mph (160.34 km/h) |
| 95 mph (152.89 km/h) | 105.16 mph (169.25 km/h) |
| 100 mph (160.93 km/h) | 110.7 mph (178.15 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
