Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-20 | 275/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.2 (691) | 27.58 (700.5) | 0.37 (9.5) 1.4% |
| Width inches (mm) | 12.01 (305) | 10.83 (275) | -1.18 (-30) -9.8% |
| Circum. inches (mm) | 85.47 (2170.84) | 86.64 (2200.69) | 1.18 (29.85) 1.4% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 3.79 (96.25) | 0.19 (4.75) 5.2% |
| Revolutions per mile (km) | 741.35 (460.65) | 731.29 (454.4) | -10.05 (-6.25) -1.4% |
275/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.27 mph (32.63 km/h) |
| 25 mph (40.23 km/h) | 25.34 mph (40.79 km/h) |
| 30 mph (48.28 km/h) | 30.41 mph (48.94 km/h) |
| 35 mph (56.33 km/h) | 35.48 mph (57.1 km/h) |
| 40 mph (64.37 km/h) | 40.55 mph (65.26 km/h) |
| 45 mph (72.42 km/h) | 45.62 mph (73.42 km/h) |
| 50 mph (80.47 km/h) | 50.69 mph (81.57 km/h) |
| 55 mph (88.51 km/h) | 55.76 mph (89.73 km/h) |
| 60 mph (96.56 km/h) | 60.82 mph (97.89 km/h) |
| 65 mph (104.61 km/h) | 65.89 mph (106.05 km/h) |
| 70 mph (112.65 km/h) | 70.96 mph (114.2 km/h) |
| 75 mph (120.7 km/h) | 76.03 mph (122.36 km/h) |
| 80 mph (128.75 km/h) | 81.1 mph (130.52 km/h) |
| 85 mph (136.79 km/h) | 86.17 mph (138.68 km/h) |
| 90 mph (144.84 km/h) | 91.24 mph (146.83 km/h) |
| 95 mph (152.89 km/h) | 96.31 mph (154.99 km/h) |
| 100 mph (160.93 km/h) | 101.37 mph (163.15 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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