Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-20 | 245/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.57 (802) | 32.54 (826.5) | 0.96 (24.5) 3.1% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 99.2 (2519.56) | 102.23 (2596.53) | 3.03 (76.97) 3.1% |
| Sidewall Height inches (mm) | 5.79 (147) | 6.27 (159.25) | 0.48 (12.25) 8.3% |
| Revolutions per mile (km) | 638.74 (396.89) | 619.81 (385.13) | -18.93 (-11.77) -3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.61 mph (33.17 km/h) |
| 25 mph (40.23 km/h) | 25.76 mph (41.46 km/h) |
| 30 mph (48.28 km/h) | 30.92 mph (49.76 km/h) |
| 35 mph (56.33 km/h) | 36.07 mph (58.05 km/h) |
| 40 mph (64.37 km/h) | 41.22 mph (66.34 km/h) |
| 45 mph (72.42 km/h) | 46.37 mph (74.63 km/h) |
| 50 mph (80.47 km/h) | 51.53 mph (82.93 km/h) |
| 55 mph (88.51 km/h) | 56.68 mph (91.22 km/h) |
| 60 mph (96.56 km/h) | 61.83 mph (99.51 km/h) |
| 65 mph (104.61 km/h) | 66.99 mph (107.8 km/h) |
| 70 mph (112.65 km/h) | 72.14 mph (116.1 km/h) |
| 75 mph (120.7 km/h) | 77.29 mph (124.39 km/h) |
| 80 mph (128.75 km/h) | 82.44 mph (132.68 km/h) |
| 85 mph (136.79 km/h) | 87.6 mph (140.97 km/h) |
| 90 mph (144.84 km/h) | 92.75 mph (149.27 km/h) |
| 95 mph (152.89 km/h) | 97.9 mph (157.56 km/h) |
| 100 mph (160.93 km/h) | 103.05 mph (165.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1577 | 1832 | 1973 | 2061 | 2155 | 2222 | 2295 | 2383 | 2504 | 2624 | 2759 | 2866 | 3061 | 3275 | 3443 | 3551 | 3611 | 3832 | 4141 | 4812 |
Better Fuel Economy Factory Ratios Increased Power
