Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-21 | 335/25-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27 (685.9) | 26.59 (675.5) | -0.41 (-10.4) -1.5% |
| Width inches (mm) | 12.01 (305) | 13.19 (335) | 1.18 (30) 9.8% |
| Circum. inches (mm) | 84.84 (2154.82) | 83.55 (2122.15) | -1.29 (-32.67) -1.5% |
| Sidewall Height inches (mm) | 3 (76.25) | 3.3 (83.75) | 0.3 (7.5) 9.8% |
| Revolutions per mile (km) | 746.86 (464.08) | 758.36 (471.22) | 11.5 (7.14) 1.5% |
335/25-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.7 mph (31.7 km/h) |
| 25 mph (40.23 km/h) | 24.62 mph (39.62 km/h) |
| 30 mph (48.28 km/h) | 29.55 mph (47.55 km/h) |
| 35 mph (56.33 km/h) | 34.47 mph (55.47 km/h) |
| 40 mph (64.37 km/h) | 39.39 mph (63.4 km/h) |
| 45 mph (72.42 km/h) | 44.32 mph (71.32 km/h) |
| 50 mph (80.47 km/h) | 49.24 mph (79.25 km/h) |
| 55 mph (88.51 km/h) | 54.17 mph (87.17 km/h) |
| 60 mph (96.56 km/h) | 59.09 mph (95.1 km/h) |
| 65 mph (104.61 km/h) | 64.01 mph (103.02 km/h) |
| 70 mph (112.65 km/h) | 68.94 mph (110.95 km/h) |
| 75 mph (120.7 km/h) | 73.86 mph (118.87 km/h) |
| 80 mph (128.75 km/h) | 78.79 mph (126.8 km/h) |
| 85 mph (136.79 km/h) | 83.71 mph (134.72 km/h) |
| 90 mph (144.84 km/h) | 88.64 mph (142.65 km/h) |
| 95 mph (152.89 km/h) | 93.56 mph (150.57 km/h) |
| 100 mph (160.93 km/h) | 98.48 mph (158.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1930 | 2242 | 2414 | 2521 | 2636 | 2718 | 2809 | 2915 | 3063 | 3211 | 3375 | 3507 | 3745 | 4008 | 4213 | 4344 | 4418 | 4689 | 5067 | 5888 |
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