Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/50-20 | 245/20-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.65 (753) | 23.86 (606) | -5.79 (-147) -19.5% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 93.13 (2365.62) | 74.95 (1903.81) | -18.18 (-461.81) -19.5% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 1.93 (49) | -2.89 (-73.5) -60% |
| Revolutions per mile (km) | 680.31 (422.72) | 845.33 (525.26) | 165.02 (102.54) 24.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.1 mph (25.9 km/h) |
| 25 mph (40.23 km/h) | 20.12 mph (32.38 km/h) |
| 30 mph (48.28 km/h) | 24.14 mph (38.86 km/h) |
| 35 mph (56.33 km/h) | 28.17 mph (45.33 km/h) |
| 40 mph (64.37 km/h) | 32.19 mph (51.81 km/h) |
| 45 mph (72.42 km/h) | 36.22 mph (58.28 km/h) |
| 50 mph (80.47 km/h) | 40.24 mph (64.76 km/h) |
| 55 mph (88.51 km/h) | 44.26 mph (71.23 km/h) |
| 60 mph (96.56 km/h) | 48.29 mph (77.71 km/h) |
| 65 mph (104.61 km/h) | 52.31 mph (84.19 km/h) |
| 70 mph (112.65 km/h) | 56.33 mph (90.66 km/h) |
| 75 mph (120.7 km/h) | 60.36 mph (97.14 km/h) |
| 80 mph (128.75 km/h) | 64.38 mph (103.61 km/h) |
| 85 mph (136.79 km/h) | 68.41 mph (110.09 km/h) |
| 90 mph (144.84 km/h) | 72.43 mph (116.57 km/h) |
| 95 mph (152.89 km/h) | 76.45 mph (123.04 km/h) |
| 100 mph (160.93 km/h) | 80.48 mph (129.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2151 | 2499 | 2691 | 2810 | 2938 | 3030 | 3131 | 3250 | 3414 | 3579 | 3762 | 3909 | 4174 | 4467 | 4696 | 4842 | 4925 | 5227 | 5648 | 6563 |
Better Fuel Economy Factory Ratios Increased Power
