Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 315/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 34.88 (886) | 8.48 (215.5) 32.1% |
| Width inches (mm) | 12.8 (325) | 12.4 (315) | -0.39 (-10) -3.1% |
| Circum. inches (mm) | 82.93 (2106.44) | 109.58 (2783.45) | 26.65 (677.01) 32.1% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 7.44 (189) | 4.24 (107.75) 132.6% |
| Revolutions per mile (km) | 764.01 (474.73) | 578.18 (359.27) | -185.83 (-115.47) -24.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.43 mph (42.53 km/h) |
| 25 mph (40.23 km/h) | 33.04 mph (53.16 km/h) |
| 30 mph (48.28 km/h) | 39.64 mph (63.8 km/h) |
| 35 mph (56.33 km/h) | 46.25 mph (74.43 km/h) |
| 40 mph (64.37 km/h) | 52.86 mph (85.06 km/h) |
| 45 mph (72.42 km/h) | 59.46 mph (95.7 km/h) |
| 50 mph (80.47 km/h) | 66.07 mph (106.33 km/h) |
| 55 mph (88.51 km/h) | 72.68 mph (116.96 km/h) |
| 60 mph (96.56 km/h) | 79.28 mph (127.6 km/h) |
| 65 mph (104.61 km/h) | 85.89 mph (138.23 km/h) |
| 70 mph (112.65 km/h) | 92.5 mph (148.86 km/h) |
| 75 mph (120.7 km/h) | 99.11 mph (159.49 km/h) |
| 80 mph (128.75 km/h) | 105.71 mph (170.13 km/h) |
| 85 mph (136.79 km/h) | 112.32 mph (180.76 km/h) |
| 90 mph (144.84 km/h) | 118.93 mph (191.39 km/h) |
| 95 mph (152.89 km/h) | 125.53 mph (202.03 km/h) |
| 100 mph (160.93 km/h) | 132.14 mph (212.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1471 | 1709 | 1841 | 1922 | 2010 | 2072 | 2141 | 2223 | 2335 | 2448 | 2573 | 2674 | 2855 | 3055 | 3212 | 3312 | 3368 | 3575 | 3863 | 4489 |
Better Fuel Economy Factory Ratios Increased Power
