Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-21 | 275/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.4 (695.9) | 27.58 (700.5) | 0.18 (4.6) 0.7% |
| Width inches (mm) | 12.8 (325) | 10.83 (275) | -1.97 (-50) -15.4% |
| Circum. inches (mm) | 86.07 (2186.23) | 86.64 (2200.69) | 0.57 (14.45) 0.7% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 3.79 (96.25) | 0.59 (15) 18.5% |
| Revolutions per mile (km) | 736.13 (457.41) | 731.29 (454.4) | -4.83 (-3) -0.7% |
275/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.13 mph (32.4 km/h) |
| 25 mph (40.23 km/h) | 25.17 mph (40.5 km/h) |
| 30 mph (48.28 km/h) | 30.2 mph (48.6 km/h) |
| 35 mph (56.33 km/h) | 35.23 mph (56.7 km/h) |
| 40 mph (64.37 km/h) | 40.26 mph (64.8 km/h) |
| 45 mph (72.42 km/h) | 45.3 mph (72.9 km/h) |
| 50 mph (80.47 km/h) | 50.33 mph (81 km/h) |
| 55 mph (88.51 km/h) | 55.36 mph (89.1 km/h) |
| 60 mph (96.56 km/h) | 60.4 mph (97.2 km/h) |
| 65 mph (104.61 km/h) | 65.43 mph (105.3 km/h) |
| 70 mph (112.65 km/h) | 70.46 mph (113.4 km/h) |
| 75 mph (120.7 km/h) | 75.5 mph (121.5 km/h) |
| 80 mph (128.75 km/h) | 80.53 mph (129.6 km/h) |
| 85 mph (136.79 km/h) | 85.56 mph (137.7 km/h) |
| 90 mph (144.84 km/h) | 90.59 mph (145.8 km/h) |
| 95 mph (152.89 km/h) | 95.63 mph (153.9 km/h) |
| 100 mph (160.93 km/h) | 100.66 mph (162 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1861 | 2162 | 2328 | 2431 | 2542 | 2621 | 2708 | 2811 | 2954 | 3096 | 3255 | 3381 | 3611 | 3865 | 4063 | 4189 | 4260 | 4522 | 4886 | 5678 |
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