Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/90-12 | 140/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 21.72 (551.6) | 1.21 (30.8) 5.9% |
| Width inches (mm) | 4.72 (120) | 5.51 (140) | 0.79 (20) 16.7% |
| Circum. inches (mm) | 64.42 (1636.14) | 68.22 (1732.9) | 3.81 (96.76) 5.9% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.86 (98) | -0.39 (-10) -9.3% |
| Revolutions per mile (km) | 983.62 (611.19) | 928.7 (577.07) | -54.92 (-34.13) -5.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.18 mph (34.09 km/h) |
| 25 mph (40.23 km/h) | 26.48 mph (42.61 km/h) |
| 30 mph (48.28 km/h) | 31.77 mph (51.14 km/h) |
| 35 mph (56.33 km/h) | 37.07 mph (59.66 km/h) |
| 40 mph (64.37 km/h) | 42.37 mph (68.18 km/h) |
| 45 mph (72.42 km/h) | 47.66 mph (76.7 km/h) |
| 50 mph (80.47 km/h) | 52.96 mph (85.23 km/h) |
| 55 mph (88.51 km/h) | 58.25 mph (93.75 km/h) |
| 60 mph (96.56 km/h) | 63.55 mph (102.27 km/h) |
| 65 mph (104.61 km/h) | 68.84 mph (110.79 km/h) |
| 70 mph (112.65 km/h) | 74.14 mph (119.32 km/h) |
| 75 mph (120.7 km/h) | 79.44 mph (127.84 km/h) |
| 80 mph (128.75 km/h) | 84.73 mph (136.36 km/h) |
| 85 mph (136.79 km/h) | 90.03 mph (144.88 km/h) |
| 90 mph (144.84 km/h) | 95.32 mph (153.41 km/h) |
| 95 mph (152.89 km/h) | 100.62 mph (161.93 km/h) |
| 100 mph (160.93 km/h) | 105.91 mph (170.45 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
