Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/90-12 | 130/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 23.19 (589) | 2.69 (68.2) 13.1% |
| Width inches (mm) | 4.72 (120) | 5.12 (130) | 0.39 (10) 8.3% |
| Circum. inches (mm) | 64.42 (1636.14) | 72.85 (1850.4) | 8.44 (214.26) 13.1% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.09 (104) | -0.16 (-4) -3.7% |
| Revolutions per mile (km) | 983.62 (611.19) | 869.73 (540.42) | -113.89 (-70.77) -11.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.62 mph (36.4 km/h) |
| 25 mph (40.23 km/h) | 28.27 mph (45.5 km/h) |
| 30 mph (48.28 km/h) | 33.93 mph (54.6 km/h) |
| 35 mph (56.33 km/h) | 39.58 mph (63.7 km/h) |
| 40 mph (64.37 km/h) | 45.24 mph (72.8 km/h) |
| 45 mph (72.42 km/h) | 50.89 mph (81.9 km/h) |
| 50 mph (80.47 km/h) | 56.55 mph (91 km/h) |
| 55 mph (88.51 km/h) | 62.2 mph (100.11 km/h) |
| 60 mph (96.56 km/h) | 67.86 mph (109.21 km/h) |
| 65 mph (104.61 km/h) | 73.51 mph (118.31 km/h) |
| 70 mph (112.65 km/h) | 79.17 mph (127.41 km/h) |
| 75 mph (120.7 km/h) | 84.82 mph (136.51 km/h) |
| 80 mph (128.75 km/h) | 90.48 mph (145.61 km/h) |
| 85 mph (136.79 km/h) | 96.13 mph (154.71 km/h) |
| 90 mph (144.84 km/h) | 101.79 mph (163.81 km/h) |
| 95 mph (152.89 km/h) | 107.44 mph (172.91 km/h) |
| 100 mph (160.93 km/h) | 113.1 mph (182.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2213 | 2571 | 2769 | 2891 | 3023 | 3117 | 3221 | 3343 | 3513 | 3683 | 3871 | 4022 | 4295 | 4596 | 4832 | 4982 | 5067 | 5378 | 5811 | 6753 |
Better Fuel Economy Factory Ratios Increased Power
