Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 335/30-20 | 28/12.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.91 (709) | 28.02 (711.72) | 0.11 (2.72) 0.4% |
| Width inches (mm) | 13.19 (335) | 12.52 (318) | -0.67 (-17) -5.1% |
| Circum. inches (mm) | 87.69 (2227.39) | 88.03 (2235.93) | 0.34 (8.55) 0.4% |
| Sidewall Height inches (mm) | 3.96 (100.5) | 6.51 (165.36) | 2.55 (64.86) 64.5% |
| Revolutions per mile (km) | 722.52 (448.96) | 719.76 (447.24) | -2.76 (-1.72) -0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.08 mph (32.31 km/h) |
| 25 mph (40.23 km/h) | 25.1 mph (40.39 km/h) |
| 30 mph (48.28 km/h) | 30.12 mph (48.47 km/h) |
| 35 mph (56.33 km/h) | 35.13 mph (56.54 km/h) |
| 40 mph (64.37 km/h) | 40.15 mph (64.62 km/h) |
| 45 mph (72.42 km/h) | 45.17 mph (72.7 km/h) |
| 50 mph (80.47 km/h) | 50.19 mph (80.78 km/h) |
| 55 mph (88.51 km/h) | 55.21 mph (88.85 km/h) |
| 60 mph (96.56 km/h) | 60.23 mph (96.93 km/h) |
| 65 mph (104.61 km/h) | 65.25 mph (105.01 km/h) |
| 70 mph (112.65 km/h) | 70.27 mph (113.09 km/h) |
| 75 mph (120.7 km/h) | 75.29 mph (121.16 km/h) |
| 80 mph (128.75 km/h) | 80.31 mph (129.24 km/h) |
| 85 mph (136.79 km/h) | 85.33 mph (137.32 km/h) |
| 90 mph (144.84 km/h) | 90.35 mph (145.4 km/h) |
| 95 mph (152.89 km/h) | 95.36 mph (153.47 km/h) |
| 100 mph (160.93 km/h) | 100.38 mph (161.55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1832 | 2128 | 2292 | 2393 | 2502 | 2580 | 2666 | 2767 | 2907 | 3048 | 3203 | 3328 | 3554 | 3804 | 3998 | 4123 | 4193 | 4451 | 4809 | 5589 |
Better Fuel Economy Factory Ratios Increased Power
