Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 360/70-24 | 420/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 43.84 (1113.6) | 46.46 (1180) | 2.61 (66.4) 6% |
| Width inches (mm) | 14.17 (360) | 16.54 (420) | 2.36 (60) 16.7% |
| Circum. inches (mm) | 137.74 (3498.48) | 145.95 (3707.08) | 8.21 (208.6) 6% |
| Sidewall Height inches (mm) | 9.92 (252) | 13.23 (336) | 3.31 (84) 33.3% |
| Revolutions per mile (km) | 460.01 (285.84) | 434.13 (269.75) | -25.89 (-16.08) -5.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.19 mph (34.11 km/h) |
| 25 mph (40.23 km/h) | 26.49 mph (42.63 km/h) |
| 30 mph (48.28 km/h) | 31.79 mph (51.16 km/h) |
| 35 mph (56.33 km/h) | 37.09 mph (59.69 km/h) |
| 40 mph (64.37 km/h) | 42.39 mph (68.21 km/h) |
| 45 mph (72.42 km/h) | 47.68 mph (76.74 km/h) |
| 50 mph (80.47 km/h) | 52.98 mph (85.27 km/h) |
| 55 mph (88.51 km/h) | 58.28 mph (93.79 km/h) |
| 60 mph (96.56 km/h) | 63.58 mph (102.32 km/h) |
| 65 mph (104.61 km/h) | 68.88 mph (110.84 km/h) |
| 70 mph (112.65 km/h) | 74.17 mph (119.37 km/h) |
| 75 mph (120.7 km/h) | 79.47 mph (127.9 km/h) |
| 80 mph (128.75 km/h) | 84.77 mph (136.42 km/h) |
| 85 mph (136.79 km/h) | 90.07 mph (144.95 km/h) |
| 90 mph (144.84 km/h) | 95.37 mph (153.48 km/h) |
| 95 mph (152.89 km/h) | 100.66 mph (162 km/h) |
| 100 mph (160.93 km/h) | 105.96 mph (170.53 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
