Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/65-20 | 35/12.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.07 (865.5) | 35.02 (889.6) | 0.95 (24.1) 2.8% |
| Width inches (mm) | 10.83 (275) | 12.52 (318) | 1.69 (43) 15.6% |
| Circum. inches (mm) | 107.05 (2719.05) | 110.03 (2794.76) | 2.98 (75.71) 2.8% |
| Sidewall Height inches (mm) | 7.04 (178.75) | 7.51 (190.8) | 0.47 (12.05) 6.7% |
| Revolutions per mile (km) | 591.88 (367.78) | 575.84 (357.81) | -16.03 (-9.96) -2.7% |
35/12.5-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.56 mph (33.08 km/h) |
| 25 mph (40.23 km/h) | 25.7 mph (41.35 km/h) |
| 30 mph (48.28 km/h) | 30.84 mph (49.62 km/h) |
| 35 mph (56.33 km/h) | 35.97 mph (57.9 km/h) |
| 40 mph (64.37 km/h) | 41.11 mph (66.17 km/h) |
| 45 mph (72.42 km/h) | 46.25 mph (74.44 km/h) |
| 50 mph (80.47 km/h) | 51.39 mph (82.71 km/h) |
| 55 mph (88.51 km/h) | 56.53 mph (90.98 km/h) |
| 60 mph (96.56 km/h) | 61.67 mph (99.25 km/h) |
| 65 mph (104.61 km/h) | 66.81 mph (107.52 km/h) |
| 70 mph (112.65 km/h) | 71.95 mph (115.79 km/h) |
| 75 mph (120.7 km/h) | 77.09 mph (124.06 km/h) |
| 80 mph (128.75 km/h) | 82.23 mph (132.33 km/h) |
| 85 mph (136.79 km/h) | 87.37 mph (140.6 km/h) |
| 90 mph (144.84 km/h) | 92.51 mph (148.87 km/h) |
| 95 mph (152.89 km/h) | 97.65 mph (157.15 km/h) |
| 100 mph (160.93 km/h) | 102.78 mph (165.42 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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