Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/75-18 | 35/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.6 (929.7) | 35.02 (889.6) | -1.58 (-40.1) -4.3% |
| Width inches (mm) | 12.4 (315) | 12.52 (318) | 0.12 (3) 1% |
| Circum. inches (mm) | 114.99 (2920.74) | 110.03 (2794.76) | -4.96 (-125.98) -4.3% |
| Sidewall Height inches (mm) | 9.3 (236.25) | 7.51 (190.8) | -1.79 (-45.45) -19.2% |
| Revolutions per mile (km) | 551.01 (342.38) | 575.84 (357.81) | 24.84 (15.43) 4.5% |
35/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.14 mph (30.8 km/h) |
| 25 mph (40.23 km/h) | 23.92 mph (38.5 km/h) |
| 30 mph (48.28 km/h) | 28.71 mph (46.2 km/h) |
| 35 mph (56.33 km/h) | 33.49 mph (53.9 km/h) |
| 40 mph (64.37 km/h) | 38.27 mph (61.6 km/h) |
| 45 mph (72.42 km/h) | 43.06 mph (69.3 km/h) |
| 50 mph (80.47 km/h) | 47.84 mph (77 km/h) |
| 55 mph (88.51 km/h) | 52.63 mph (84.7 km/h) |
| 60 mph (96.56 km/h) | 57.41 mph (92.4 km/h) |
| 65 mph (104.61 km/h) | 62.2 mph (100.1 km/h) |
| 70 mph (112.65 km/h) | 66.98 mph (107.8 km/h) |
| 75 mph (120.7 km/h) | 71.77 mph (115.49 km/h) |
| 80 mph (128.75 km/h) | 76.55 mph (123.19 km/h) |
| 85 mph (136.79 km/h) | 81.33 mph (130.89 km/h) |
| 90 mph (144.84 km/h) | 86.12 mph (138.59 km/h) |
| 95 mph (152.89 km/h) | 90.9 mph (146.29 km/h) |
| 100 mph (160.93 km/h) | 95.69 mph (153.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1465 | 1702 | 1833 | 1914 | 2002 | 2064 | 2133 | 2214 | 2326 | 2438 | 2563 | 2663 | 2844 | 3043 | 3199 | 3299 | 3355 | 3561 | 3847 | 4471 |
Better Fuel Economy Factory Ratios Increased Power
