Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/50-20 | 35/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.22 (793) | 35.02 (889.6) | 3.8 (96.6) 12.2% |
| Width inches (mm) | 11.22 (285) | 12.52 (318) | 1.3 (33) 11.6% |
| Circum. inches (mm) | 98.08 (2491.28) | 110.03 (2794.76) | 11.95 (303.48) 12.2% |
| Sidewall Height inches (mm) | 5.61 (142.5) | 7.51 (190.8) | 1.9 (48.3) 33.9% |
| Revolutions per mile (km) | 645.99 (401.4) | 575.84 (357.81) | -70.15 (-43.59) -10.9% |
35/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.44 mph (36.11 km/h) |
| 25 mph (40.23 km/h) | 28.05 mph (45.13 km/h) |
| 30 mph (48.28 km/h) | 33.65 mph (54.16 km/h) |
| 35 mph (56.33 km/h) | 39.26 mph (63.19 km/h) |
| 40 mph (64.37 km/h) | 44.87 mph (72.22 km/h) |
| 45 mph (72.42 km/h) | 50.48 mph (81.24 km/h) |
| 50 mph (80.47 km/h) | 56.09 mph (90.27 km/h) |
| 55 mph (88.51 km/h) | 61.7 mph (99.3 km/h) |
| 60 mph (96.56 km/h) | 67.31 mph (108.32 km/h) |
| 65 mph (104.61 km/h) | 72.92 mph (117.35 km/h) |
| 70 mph (112.65 km/h) | 78.53 mph (126.38 km/h) |
| 75 mph (120.7 km/h) | 84.14 mph (135.4 km/h) |
| 80 mph (128.75 km/h) | 89.75 mph (144.43 km/h) |
| 85 mph (136.79 km/h) | 95.35 mph (153.46 km/h) |
| 90 mph (144.84 km/h) | 100.96 mph (162.49 km/h) |
| 95 mph (152.89 km/h) | 106.57 mph (171.51 km/h) |
| 100 mph (160.93 km/h) | 112.18 mph (180.54 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 |
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