Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 120/70-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 25.61 (650.6) | -1.53 (-38.8) -5.6% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 85.27 (2165.81) | 80.47 (2043.92) | -4.8 (-121.89) -5.6% |
| Sidewall Height inches (mm) | 3.07 (78) | 3.31 (84) | 0.24 (6) 7.7% |
| Revolutions per mile (km) | 743.07 (461.72) | 787.38 (489.25) | 44.31 (27.54) 6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.87 mph (30.38 km/h) |
| 25 mph (40.23 km/h) | 23.59 mph (37.97 km/h) |
| 30 mph (48.28 km/h) | 28.31 mph (45.56 km/h) |
| 35 mph (56.33 km/h) | 33.03 mph (53.16 km/h) |
| 40 mph (64.37 km/h) | 37.75 mph (60.75 km/h) |
| 45 mph (72.42 km/h) | 42.47 mph (68.34 km/h) |
| 50 mph (80.47 km/h) | 47.19 mph (75.94 km/h) |
| 55 mph (88.51 km/h) | 51.9 mph (83.53 km/h) |
| 60 mph (96.56 km/h) | 56.62 mph (91.13 km/h) |
| 65 mph (104.61 km/h) | 61.34 mph (98.72 km/h) |
| 70 mph (112.65 km/h) | 66.06 mph (106.31 km/h) |
| 75 mph (120.7 km/h) | 70.78 mph (113.91 km/h) |
| 80 mph (128.75 km/h) | 75.5 mph (121.5 km/h) |
| 85 mph (136.79 km/h) | 80.22 mph (129.1 km/h) |
| 90 mph (144.84 km/h) | 84.93 mph (136.69 km/h) |
| 95 mph (152.89 km/h) | 89.65 mph (144.28 km/h) |
| 100 mph (160.93 km/h) | 94.37 mph (151.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2004 | 2328 | 2507 | 2618 | 2737 | 2822 | 2916 | 3027 | 3180 | 3334 | 3504 | 3641 | 3888 | 4161 | 4374 | 4511 | 4587 | 4869 | 5261 | 6114 |
Better Fuel Economy Factory Ratios Increased Power
