Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/35-20 | 315/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.58 (700.5) | 27.44 (697) | -0.14 (-3.5) -0.5% |
| Width inches (mm) | 10.83 (275) | 12.4 (315) | 1.57 (40) 14.5% |
| Circum. inches (mm) | 86.64 (2200.69) | 86.21 (2189.69) | -0.43 (-11) -0.5% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 3.72 (94.5) | -0.07 (-1.75) -1.8% |
| Revolutions per mile (km) | 731.29 (454.4) | 734.96 (456.68) | 3.67 (2.28) 0.5% |
315/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.9 mph (32.03 km/h) |
| 25 mph (40.23 km/h) | 24.88 mph (40.03 km/h) |
| 30 mph (48.28 km/h) | 29.85 mph (48.04 km/h) |
| 35 mph (56.33 km/h) | 34.83 mph (56.05 km/h) |
| 40 mph (64.37 km/h) | 39.8 mph (64.05 km/h) |
| 45 mph (72.42 km/h) | 44.78 mph (72.06 km/h) |
| 50 mph (80.47 km/h) | 49.75 mph (80.07 km/h) |
| 55 mph (88.51 km/h) | 54.73 mph (88.07 km/h) |
| 60 mph (96.56 km/h) | 59.7 mph (96.08 km/h) |
| 65 mph (104.61 km/h) | 64.68 mph (104.08 km/h) |
| 70 mph (112.65 km/h) | 69.65 mph (112.09 km/h) |
| 75 mph (120.7 km/h) | 74.63 mph (120.1 km/h) |
| 80 mph (128.75 km/h) | 79.6 mph (128.1 km/h) |
| 85 mph (136.79 km/h) | 84.58 mph (136.11 km/h) |
| 90 mph (144.84 km/h) | 89.55 mph (144.12 km/h) |
| 95 mph (152.89 km/h) | 94.53 mph (152.12 km/h) |
| 100 mph (160.93 km/h) | 99.5 mph (160.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1870 | 2173 | 2340 | 2443 | 2555 | 2634 | 2722 | 2825 | 2969 | 3112 | 3271 | 3398 | 3629 | 3884 | 4083 | 4210 | 4282 | 4545 | 4911 | 5707 |
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