Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-21 | 255/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.97 (735.9) | 27.03 (686.5) | -1.94 (-49.4) -6.7% |
| Width inches (mm) | 8.86 (225) | 10.04 (255) | 1.18 (30) 13.3% |
| Circum. inches (mm) | 91.02 (2311.9) | 84.91 (2156.7) | -6.11 (-155.19) -6.7% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 3.51 (89.25) | -0.47 (-12) -11.9% |
| Revolutions per mile (km) | 696.11 (432.54) | 746.21 (463.67) | 50.09 (31.13) 7.2% |
255/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.66 mph (30.03 km/h) |
| 25 mph (40.23 km/h) | 23.32 mph (37.53 km/h) |
| 30 mph (48.28 km/h) | 27.99 mph (45.04 km/h) |
| 35 mph (56.33 km/h) | 32.65 mph (52.55 km/h) |
| 40 mph (64.37 km/h) | 37.31 mph (60.05 km/h) |
| 45 mph (72.42 km/h) | 41.98 mph (67.56 km/h) |
| 50 mph (80.47 km/h) | 46.64 mph (75.07 km/h) |
| 55 mph (88.51 km/h) | 51.31 mph (82.57 km/h) |
| 60 mph (96.56 km/h) | 55.97 mph (90.08 km/h) |
| 65 mph (104.61 km/h) | 60.64 mph (97.59 km/h) |
| 70 mph (112.65 km/h) | 65.3 mph (105.09 km/h) |
| 75 mph (120.7 km/h) | 69.97 mph (112.6 km/h) |
| 80 mph (128.75 km/h) | 74.63 mph (120.11 km/h) |
| 85 mph (136.79 km/h) | 79.29 mph (127.61 km/h) |
| 90 mph (144.84 km/h) | 83.96 mph (135.12 km/h) |
| 95 mph (152.89 km/h) | 88.62 mph (142.62 km/h) |
| 100 mph (160.93 km/h) | 93.29 mph (150.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1899 | 2206 | 2376 | 2481 | 2594 | 2675 | 2764 | 2869 | 3014 | 3160 | 3321 | 3450 | 3685 | 3943 | 4145 | 4275 | 4347 | 4614 | 4986 | 5794 |
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