Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/45-17 | 315/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.52 (724.3) | 28.68 (728.5) | 0.17 (4.2) 0.6% |
| Width inches (mm) | 12.8 (325) | 12.4 (315) | -0.39 (-10) -3.1% |
| Circum. inches (mm) | 89.58 (2275.46) | 90.1 (2288.65) | 0.52 (13.19) 0.6% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 4.34 (110.25) | -1.42 (-36) -24.6% |
| Revolutions per mile (km) | 707.26 (439.47) | 703.18 (436.94) | -4.08 (-2.53) -0.6% |
315/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.12 mph (32.37 km/h) |
| 25 mph (40.23 km/h) | 25.14 mph (40.47 km/h) |
| 30 mph (48.28 km/h) | 30.17 mph (48.56 km/h) |
| 35 mph (56.33 km/h) | 35.2 mph (56.65 km/h) |
| 40 mph (64.37 km/h) | 40.23 mph (64.75 km/h) |
| 45 mph (72.42 km/h) | 45.26 mph (72.84 km/h) |
| 50 mph (80.47 km/h) | 50.29 mph (80.93 km/h) |
| 55 mph (88.51 km/h) | 55.32 mph (89.03 km/h) |
| 60 mph (96.56 km/h) | 60.35 mph (97.12 km/h) |
| 65 mph (104.61 km/h) | 65.38 mph (105.21 km/h) |
| 70 mph (112.65 km/h) | 70.41 mph (113.31 km/h) |
| 75 mph (120.7 km/h) | 75.43 mph (121.4 km/h) |
| 80 mph (128.75 km/h) | 80.46 mph (129.49 km/h) |
| 85 mph (136.79 km/h) | 85.49 mph (137.59 km/h) |
| 90 mph (144.84 km/h) | 90.52 mph (145.68 km/h) |
| 95 mph (152.89 km/h) | 95.55 mph (153.77 km/h) |
| 100 mph (160.93 km/h) | 100.58 mph (161.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1789 | 2079 | 2239 | 2338 | 2444 | 2520 | 2604 | 2703 | 2840 | 2977 | 3130 | 3252 | 3472 | 3716 | 3906 | 4028 | 4097 | 4348 | 4698 | 5460 |
Better Fuel Economy Factory Ratios Increased Power
