Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/90-12 | 120/90-10 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 18.5 (470) | -2 (-50.8) -9.8% |
| Width inches (mm) | 4.72 (120) | 4.72 (120) | 0 (0) 0% |
| Circum. inches (mm) | 64.42 (1636.14) | 58.13 (1476.55) | -6.28 (-159.59) -9.8% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.25 (108) | 0 (0) 0% |
| Revolutions per mile (km) | 983.62 (611.19) | 1089.94 (677.25) | 106.31 (66.06) 10.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.05 mph (29.05 km/h) |
| 25 mph (40.23 km/h) | 22.56 mph (36.31 km/h) |
| 30 mph (48.28 km/h) | 27.07 mph (43.57 km/h) |
| 35 mph (56.33 km/h) | 31.59 mph (50.83 km/h) |
| 40 mph (64.37 km/h) | 36.1 mph (58.09 km/h) |
| 45 mph (72.42 km/h) | 40.61 mph (65.36 km/h) |
| 50 mph (80.47 km/h) | 45.12 mph (72.62 km/h) |
| 55 mph (88.51 km/h) | 49.64 mph (79.88 km/h) |
| 60 mph (96.56 km/h) | 54.15 mph (87.14 km/h) |
| 65 mph (104.61 km/h) | 58.66 mph (94.4 km/h) |
| 70 mph (112.65 km/h) | 63.17 mph (101.67 km/h) |
| 75 mph (120.7 km/h) | 67.68 mph (108.93 km/h) |
| 80 mph (128.75 km/h) | 72.2 mph (116.19 km/h) |
| 85 mph (136.79 km/h) | 76.71 mph (123.45 km/h) |
| 90 mph (144.84 km/h) | 81.22 mph (130.71 km/h) |
| 95 mph (152.89 km/h) | 85.73 mph (137.97 km/h) |
| 100 mph (160.93 km/h) | 90.25 mph (145.24 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
