Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/70-19 | 120/70-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.17 (664.6) | 27.61 (701.4) | 1.45 (36.8) 5.5% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 82.2 (2087.9) | 86.75 (2203.51) | 4.55 (115.61) 5.5% |
| Sidewall Height inches (mm) | 3.58 (91) | 3.31 (84) | -0.28 (-7) -7.7% |
| Revolutions per mile (km) | 770.79 (478.95) | 730.35 (453.82) | -40.44 (-25.13) -5.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.11 mph (33.97 km/h) |
| 25 mph (40.23 km/h) | 26.38 mph (42.46 km/h) |
| 30 mph (48.28 km/h) | 31.66 mph (50.95 km/h) |
| 35 mph (56.33 km/h) | 36.94 mph (59.45 km/h) |
| 40 mph (64.37 km/h) | 42.21 mph (67.94 km/h) |
| 45 mph (72.42 km/h) | 47.49 mph (76.43 km/h) |
| 50 mph (80.47 km/h) | 52.77 mph (84.92 km/h) |
| 55 mph (88.51 km/h) | 58.05 mph (93.42 km/h) |
| 60 mph (96.56 km/h) | 63.32 mph (101.91 km/h) |
| 65 mph (104.61 km/h) | 68.6 mph (110.4 km/h) |
| 70 mph (112.65 km/h) | 73.88 mph (118.89 km/h) |
| 75 mph (120.7 km/h) | 79.15 mph (127.38 km/h) |
| 80 mph (128.75 km/h) | 84.43 mph (135.88 km/h) |
| 85 mph (136.79 km/h) | 89.71 mph (144.37 km/h) |
| 90 mph (144.84 km/h) | 94.98 mph (152.86 km/h) |
| 95 mph (152.89 km/h) | 100.26 mph (161.35 km/h) |
| 100 mph (160.93 km/h) | 105.54 mph (169.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1859 | 2159 | 2325 | 2428 | 2539 | 2618 | 2705 | 2808 | 2950 | 3092 | 3251 | 3377 | 3606 | 3860 | 4057 | 4184 | 4255 | 4516 | 4880 | 5671 |
Better Fuel Economy Factory Ratios Increased Power
