Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/30-20 | 405/35-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 35.16 (893.1) | 10.08 (256.1) 40.2% |
| Width inches (mm) | 8.46 (215) | 15.94 (405) | 7.48 (190) 88.4% |
| Circum. inches (mm) | 78.79 (2001.19) | 110.46 (2805.76) | 31.68 (804.56) 40.2% |
| Sidewall Height inches (mm) | 2.54 (64.5) | 5.58 (141.75) | 3.04 (77.25) 119.8% |
| Revolutions per mile (km) | 804.19 (499.7) | 573.59 (356.41) | -230.61 (-143.29) -28.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.04 mph (45.13 km/h) |
| 25 mph (40.23 km/h) | 35.05 mph (56.41 km/h) |
| 30 mph (48.28 km/h) | 42.06 mph (67.69 km/h) |
| 35 mph (56.33 km/h) | 49.07 mph (78.97 km/h) |
| 40 mph (64.37 km/h) | 56.08 mph (90.25 km/h) |
| 45 mph (72.42 km/h) | 63.09 mph (101.54 km/h) |
| 50 mph (80.47 km/h) | 70.1 mph (112.82 km/h) |
| 55 mph (88.51 km/h) | 77.11 mph (124.1 km/h) |
| 60 mph (96.56 km/h) | 84.12 mph (135.38 km/h) |
| 65 mph (104.61 km/h) | 91.13 mph (146.66 km/h) |
| 70 mph (112.65 km/h) | 98.14 mph (157.95 km/h) |
| 75 mph (120.7 km/h) | 105.15 mph (169.23 km/h) |
| 80 mph (128.75 km/h) | 112.16 mph (180.51 km/h) |
| 85 mph (136.79 km/h) | 119.17 mph (191.79 km/h) |
| 90 mph (144.84 km/h) | 126.18 mph (203.07 km/h) |
| 95 mph (152.89 km/h) | 133.19 mph (214.36 km/h) |
| 100 mph (160.93 km/h) | 140.2 mph (225.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1460 | 1696 | 1826 | 1907 | 1994 | 2056 | 2124 | 2205 | 2317 | 2429 | 2553 | 2652 | 2832 | 3031 | 3186 | 3286 | 3342 | 3547 | 3832 | 4454 |
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