Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 37/13.5-20 | 35/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.01 (940.18) | 35.02 (889.6) | -1.99 (-50.58) -5.4% |
| Width inches (mm) | 13.5 (343) | 12.52 (318) | -0.98 (-25) -7.3% |
| Circum. inches (mm) | 116.29 (2953.66) | 110.03 (2794.76) | -6.26 (-158.9) -5.4% |
| Sidewall Height inches (mm) | 8.51 (216.09) | 7.51 (190.8) | -1 (-25.29) -11.7% |
| Revolutions per mile (km) | 544.86 (338.56) | 575.84 (357.81) | 30.98 (19.25) 5.7% |
35/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.92 mph (30.46 km/h) |
| 25 mph (40.23 km/h) | 23.66 mph (38.07 km/h) |
| 30 mph (48.28 km/h) | 28.39 mph (45.68 km/h) |
| 35 mph (56.33 km/h) | 33.12 mph (53.3 km/h) |
| 40 mph (64.37 km/h) | 37.85 mph (60.91 km/h) |
| 45 mph (72.42 km/h) | 42.58 mph (68.52 km/h) |
| 50 mph (80.47 km/h) | 47.31 mph (76.14 km/h) |
| 55 mph (88.51 km/h) | 52.04 mph (83.75 km/h) |
| 60 mph (96.56 km/h) | 56.77 mph (91.37 km/h) |
| 65 mph (104.61 km/h) | 61.5 mph (98.98 km/h) |
| 70 mph (112.65 km/h) | 66.23 mph (106.59 km/h) |
| 75 mph (120.7 km/h) | 70.97 mph (114.21 km/h) |
| 80 mph (128.75 km/h) | 75.7 mph (121.82 km/h) |
| 85 mph (136.79 km/h) | 80.43 mph (129.44 km/h) |
| 90 mph (144.84 km/h) | 85.16 mph (137.05 km/h) |
| 95 mph (152.89 km/h) | 89.89 mph (144.66 km/h) |
| 100 mph (160.93 km/h) | 94.62 mph (152.28 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
