Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 305/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 32.81 (833.4) | 4.82 (122.5) 17.2% |
| Width inches (mm) | 13.98 (355) | 12.01 (305) | -1.97 (-50) -14.1% |
| Circum. inches (mm) | 87.93 (2233.36) | 103.08 (2618.2) | 15.15 (384.85) 17.2% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 8.41 (213.5) | 4.91 (124.75) 140.6% |
| Revolutions per mile (km) | 720.59 (447.76) | 614.67 (381.94) | -105.92 (-65.81) -14.7% |
305/70-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.45 mph (37.73 km/h) |
| 25 mph (40.23 km/h) | 29.31 mph (47.17 km/h) |
| 30 mph (48.28 km/h) | 35.17 mph (56.6 km/h) |
| 35 mph (56.33 km/h) | 41.03 mph (66.03 km/h) |
| 40 mph (64.37 km/h) | 46.89 mph (75.47 km/h) |
| 45 mph (72.42 km/h) | 52.75 mph (84.9 km/h) |
| 50 mph (80.47 km/h) | 58.62 mph (94.33 km/h) |
| 55 mph (88.51 km/h) | 64.48 mph (103.77 km/h) |
| 60 mph (96.56 km/h) | 70.34 mph (113.2 km/h) |
| 65 mph (104.61 km/h) | 76.2 mph (122.63 km/h) |
| 70 mph (112.65 km/h) | 82.06 mph (132.07 km/h) |
| 75 mph (120.7 km/h) | 87.92 mph (141.5 km/h) |
| 80 mph (128.75 km/h) | 93.79 mph (150.93 km/h) |
| 85 mph (136.79 km/h) | 99.65 mph (160.37 km/h) |
| 90 mph (144.84 km/h) | 105.51 mph (169.8 km/h) |
| 95 mph (152.89 km/h) | 111.37 mph (179.23 km/h) |
| 100 mph (160.93 km/h) | 117.23 mph (188.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1564 | 1817 | 1957 | 2043 | 2137 | 2203 | 2276 | 2363 | 2483 | 2603 | 2736 | 2842 | 3035 | 3248 | 3415 | 3521 | 3581 | 3801 | 4107 | 4773 |
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