Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/65-20 | 355/25-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.1 (891.5) | 27.99 (710.9) | -7.11 (-180.6) -20.3% |
| Width inches (mm) | 11.61 (295) | 13.98 (355) | 2.36 (60) 20.3% |
| Circum. inches (mm) | 110.26 (2800.73) | 87.93 (2233.36) | -22.34 (-567.37) -20.3% |
| Sidewall Height inches (mm) | 7.55 (191.75) | 3.49 (88.75) | -4.06 (-103) -53.7% |
| Revolutions per mile (km) | 574.62 (357.05) | 720.59 (447.76) | 145.98 (90.71) 25.4% |
355/25-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 15.95 mph (25.67 km/h) |
| 25 mph (40.23 km/h) | 19.94 mph (32.08 km/h) |
| 30 mph (48.28 km/h) | 23.92 mph (38.5 km/h) |
| 35 mph (56.33 km/h) | 27.91 mph (44.92 km/h) |
| 40 mph (64.37 km/h) | 31.9 mph (51.33 km/h) |
| 45 mph (72.42 km/h) | 35.88 mph (57.75 km/h) |
| 50 mph (80.47 km/h) | 39.87 mph (64.17 km/h) |
| 55 mph (88.51 km/h) | 43.86 mph (70.58 km/h) |
| 60 mph (96.56 km/h) | 47.85 mph (77 km/h) |
| 65 mph (104.61 km/h) | 51.83 mph (83.42 km/h) |
| 70 mph (112.65 km/h) | 55.82 mph (89.83 km/h) |
| 75 mph (120.7 km/h) | 59.81 mph (96.25 km/h) |
| 80 mph (128.75 km/h) | 63.79 mph (102.67 km/h) |
| 85 mph (136.79 km/h) | 67.78 mph (109.08 km/h) |
| 90 mph (144.84 km/h) | 71.77 mph (115.5 km/h) |
| 95 mph (152.89 km/h) | 75.75 mph (121.92 km/h) |
| 100 mph (160.93 km/h) | 79.74 mph (128.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1834 | 2130 | 2294 | 2396 | 2505 | 2583 | 2669 | 2770 | 2911 | 3051 | 3207 | 3332 | 3558 | 3808 | 4003 | 4128 | 4198 | 4456 | 4815 | 5595 |
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