Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-20 | 315/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.2 (665.5) | 34.88 (886) | 8.68 (220.5) 33.1% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 82.31 (2090.73) | 109.58 (2783.45) | 27.27 (692.72) 33.1% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 7.44 (189) | 4.34 (110.25) 140% |
| Revolutions per mile (km) | 769.75 (478.3) | 578.18 (359.27) | -191.57 (-119.04) -24.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.63 mph (42.85 km/h) |
| 25 mph (40.23 km/h) | 33.28 mph (53.56 km/h) |
| 30 mph (48.28 km/h) | 39.94 mph (64.28 km/h) |
| 35 mph (56.33 km/h) | 46.6 mph (74.99 km/h) |
| 40 mph (64.37 km/h) | 53.25 mph (85.7 km/h) |
| 45 mph (72.42 km/h) | 59.91 mph (96.42 km/h) |
| 50 mph (80.47 km/h) | 66.57 mph (107.13 km/h) |
| 55 mph (88.51 km/h) | 73.22 mph (117.84 km/h) |
| 60 mph (96.56 km/h) | 79.88 mph (128.55 km/h) |
| 65 mph (104.61 km/h) | 86.54 mph (139.27 km/h) |
| 70 mph (112.65 km/h) | 93.19 mph (149.98 km/h) |
| 75 mph (120.7 km/h) | 99.85 mph (160.69 km/h) |
| 80 mph (128.75 km/h) | 106.51 mph (171.41 km/h) |
| 85 mph (136.79 km/h) | 113.16 mph (182.12 km/h) |
| 90 mph (144.84 km/h) | 119.82 mph (192.83 km/h) |
| 95 mph (152.89 km/h) | 126.48 mph (203.54 km/h) |
| 100 mph (160.93 km/h) | 133.13 mph (214.26 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
