Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 360/70-24 | 420/85-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 43.84 (1113.6) | 52.11 (1323.6) | 8.27 (210) 18.9% |
| Width inches (mm) | 14.17 (360) | 16.54 (420) | 2.36 (60) 16.7% |
| Circum. inches (mm) | 137.74 (3498.48) | 163.71 (4158.21) | 25.97 (659.73) 18.9% |
| Sidewall Height inches (mm) | 9.92 (252) | 14.06 (357) | 4.13 (105) 41.7% |
| Revolutions per mile (km) | 460.01 (285.84) | 387.03 (240.49) | -72.98 (-45.35) -15.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.77 mph (38.26 km/h) |
| 25 mph (40.23 km/h) | 29.71 mph (47.82 km/h) |
| 30 mph (48.28 km/h) | 35.66 mph (57.39 km/h) |
| 35 mph (56.33 km/h) | 41.6 mph (66.95 km/h) |
| 40 mph (64.37 km/h) | 47.54 mph (76.51 km/h) |
| 45 mph (72.42 km/h) | 53.49 mph (86.08 km/h) |
| 50 mph (80.47 km/h) | 59.43 mph (95.64 km/h) |
| 55 mph (88.51 km/h) | 65.37 mph (105.21 km/h) |
| 60 mph (96.56 km/h) | 71.31 mph (114.77 km/h) |
| 65 mph (104.61 km/h) | 77.26 mph (124.33 km/h) |
| 70 mph (112.65 km/h) | 83.2 mph (133.9 km/h) |
| 75 mph (120.7 km/h) | 89.14 mph (143.46 km/h) |
| 80 mph (128.75 km/h) | 95.09 mph (153.03 km/h) |
| 85 mph (136.79 km/h) | 101.03 mph (162.59 km/h) |
| 90 mph (144.84 km/h) | 106.97 mph (172.16 km/h) |
| 95 mph (152.89 km/h) | 112.91 mph (181.72 km/h) |
| 100 mph (160.93 km/h) | 118.86 mph (191.28 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
